Iveco trakker 420 коды ошибок

DTC

Failing component

Visible failure

Possible Cause

Repair action

113

ACCELERATOR PEDAL/ BRAKE PEDAL
SUSPECT

Vehicle acceleration very slow.
Engine idle speed: 500 rpm.

Accelerator pedal and brake
pressed simultaneously (for too long); Accelerator pedal blocked or faulty; Incorrect use of vehicle.

Check the accelerator pedal signal
and pedal mechanical movement.

116

CLUTCH SIGNAL SUSPECT

The parameter reading shows that
the clutch is pressed.

Clutch switch faulty or wiring
problems in pedal.

Check clutch pedal switch and
wiring.

117

BRAKE PEDAL SIGNAL ERROR

Slight power reduction

Main and secondary brake switch
not synchronised. One of the two brake pedal switches may be stuck.

Check the synchronisation of both
switches (signal) and wiring.

119

PLAUSIBILITY +15

Possible mechanical problem (in
pawl) or electrical problem.

Check wiring.

121

SPEED LIMITER W/ LIGHT

Warning light permanently
off.

Short circuit or defective
wiring

Check wiring.

122

WARNING LIGHT EOBD

Warning light permanently
off.

Short circuit or defective
wiring

Check wiring.

123

EDC LAMP

Warning light permanently
off.

Short circuit or defective
wiring.

Check wiring.

124

COLD START LAMP

Warning light permanently
off.

Short circuit or defective
wiring.

Check wiring.

125

MAIN RELAY DEFECT

Possible problems during
after-run.

Relay short circuit to battery
positive or ground.

Check wiring between ECM and
battery. Replace relay if necessary.

126

BATTERY VOLTAGE

Possible problems during
after-run.

Alternator or battery defective.
Possible wiring problem.

Check wiring. Replace alternator
regulator or battery Replace the alternator if necessary

127

ENGINE BRAKE ELECTROVALVE

Engine brake not
operational.

Relay or wiring short-circuited or
interrupted.

Check wiring. Replace relay if
necessary

128

MAIN RELAY — SHORT CIRCUIT TO
BATTERY

Possible problems during
after-run

Relay short circuit to battery
positive or ground. Relay may be faulty.

Check wiring between ECM and
battery. Replace relay if necessary.

129

AIRCONDITIONER COMPRESSOR
RELAY

Possible problems during
after-run.

Relay short circuit to battery
positive or ground. Relay may be faulty.

Check wiring between ECM and
battery. Replace relay if necessary.

12A

RELAIS FOR ENGINE BRAKE
VALVE

Possible problems during
after-run.

Relay short circuit to battery
positive or ground. Relay may be faulty.

Check wiring between ECM and
battery. Replace relay if necessary.

12B

THERMOSTARTER RELAY 1
(HEATER)

Heater not working.

Relay or wiring short-circuited or
interrupted.

Check wiring. Replace relay if
necessary.

12C

THERMOSTARTER RELAY 2

Heater not working.

Relay or wiring short-circuited or
interrupted

Check wiring. Replace relay if
necessary

12E

MANAGEMENT SYSTEM PRE/ POSTHEATING
(ACTIVE)

Grid heater permanently
operating

Grid heater short circuited to
ground.

Check wiring and component.

131

COOLANT TEMPERATURE SENSOR

No reaction noticeable on behalf
of the driver.

Sensor short-circuited or value
implausible

Check the wiring. Replace sensor
if necessary.

132

COOLANT TEMPERATURE SENSOR
(TEST)

Slight power reduction.

Operation in extreme environmental
conditions or sensor inaccurate.

Ensure the engine is not working
in extreme environmental conditions. Check the wiring and the sensor accuracy. Replace sensor if necessary.

133

AIR TEMPERATURE SENSOR BOOST
AIR

Slight power reduction.

Sensor short-circuited or value
implausible.

Check the wiring. Replace sensor
if necessary.

134

BOOST PRESSURE SENSOR

No reaction perceivable by the
driver. Parameter recovery value: 2700 mbar.

Sensor short-circuited or
difference between environmental pressure and turbo pressure implausible.

Check the wiring. Also check the
environmental pressure sensor. Replace sensor if necessary.

135

FUEL TEMPERATURE SENSOR

Slight power reduction.

Sensor short-circuited or value
implausible.

Check the wiring. Replace sensor
if necessary

138

OIL PRESSURE SENSOR

No reaction perceivable by the
driver. Parameter recovery value: 3000 mbar.

Sensor short-circuited or value
implausible.

Check the wiring and oil level.
Replace sensor if necessary.

13A

OIL TEMPERATURE SENSOR

No reaction perceivable by the
driver. Parameter recovery value: coolant temperature value (if intact) otherwise 120 C).

Sensor short-circuited or value
implausible.

Check the wiring. Replace sensor
if necessary.

13C

ATMOSPHERIC TEMPERATURE
SENSOR(HUMIDTIY?)

No reaction perceivable by the
driver. Parameter recovery value: 40 C.

Sensor short-circuited or value
implausible.

Check the wiring. Replace sensor
if necessary

DTC

Failing component

Visible failure

Possible Cause

Repair action

141

CRANKSHAFT SPEED

No reaction noticeable on behalf
of the driver

Signal interrupted or wiring
problem. Sensor installation may not be correct.

Check wiring and installation.
Replace sensor if necessary

142

ENGINE WORKING ONLY WITH CAMSHAFT
SENSOR

No reaction perceivable by the
driver

Signal interrupted or wiring
problem. Sensor installation may not be correct.

Check wiring and installation.
Replace sensor if necessary

143

CAMSHAFT SENSOR

No reaction perceivable by the
driver.

Signal interrupted or wiring
problem. Sensor installation may not be correct.

Check wiring and installation.
Replace sensor if necessary

144

FAULT BETWEEN FLYWHEEL SENSOR AND
CAMSHAFT

No reaction noticeable on behalf
of the driver.

Signal interrupted or wiring
problem. Flywheel and timing sensor installation may be incorrect.

Check wiring and installation of
both sensors.

145

FAN RELAY

No reaction perceivable by the
driver. Fan off.

Short circuit or fan actuator
faulty.

Check the wiring and the fan
actuator. Replace the actuator if necessary.

148

AIRCONDITIONER COMPRESSOR
RELAY

Air conditioner permanently
off.

Wiring or relay
short-circuited.

Check the wiring. Replace relay if
necessary.

149

PRE -HEAT — ING RELAY FUEL
FILTER

Filter heater not working.

Wiring or filter heater short
-circuited.

Check the wiring. Re — place the
filter heater if necessary.

151

INJECTOR CYLINDER 1

The engine runs on 5
cylinders.

Injector no.1 electric
trouble.

Check correct tightness to torque
of the connectors on the solenoid valve of the injector (1.36 — 1.92 Nm). Check the integrity of the injector coil and replace the injector if defective. If the coil is integral,
check the wiring between the solenoid valve and EDC connector.

152

INJECTOR CYLINDER 2

The engine runs on 5
cylinders.

Injector no.2 electric
trouble.

Check correct tightness to torque
of the connectors on the solenoid valve of the injector (1.36 — 1.92 Nm).Check the integrity of the injector coil and replace the injector if defective. If the coil is integral,
check the wiring be — tween the solenoid valve and EDC connector.

153

INJECTOR CYLINDER 3

The engine runs on 5
cylinders.

Injector no.3 electric
trouble

Check correct tightness to torque
of the connectors on the solenoid valve of the injector (1.36 — 1.92 Nm). Check the integrity of the injector coil and replace the injector if defective. If the coil is integral,
check the wiring between the solenoid valve and EDC connector.

154

INJECTOR CYLINDER 4

The engine runs on 5
cylinders

Injector no.4 electric
trouble

Check correct tightness to torque
of the connectors on the solenoid valve of the injector (1.36 — 1.92 Nm).Check the integrity of the injector coil and replace the injector if defective. If the coil is integral,
check the wiring between the solenoid valve and EDC connector.

155

INJECTOR CYLINDER 5

The engine runs on 5
cylinders

Injector no.5 electric
trouble

Check correct tightness to torque
of the connectors on the solenoid valve of the injector (1.36 — 1.92 Nm).Check the integrity of the injector coil and replace the injector if defective. If the coil is integral,
check the wiring between the solenoid valve and EDC connector.

156

INJECTOR CYLINDER 6

The engine runs on 5
cylinders

Injector no.6 electric
trouble

Check correct tightness to torque
of the connectors on the solenoid valve of the injector (1.36 — 1.92 Nm).Check the integrity of the injector coil and replace the injector if defective. If the coil is integral,
check the wiring between the solenoid valve and EDC connector.

161

INJECTOR CYLINDER 1 / SHORT
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible short circuit in
connections. Possible problem in injector coil . Possible problem in control unit.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

162

INJECTOR CYLINDER 2 / SHORT
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible short circuit in
connections. Possible problem in injector coil . Possible problem in control unit.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

163

INJECTOR CYLINDER 3 / SHORT
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible short circuit in
connections. Possible problem in injector coil . Possible problem in control unit.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

164

INJECTOR CYLINDER 4 / SHORT
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible short circuit in
connections. Possible problem in injector coil . Possible problem in control unit.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

165

INJECTOR CYLINDER 5 / SHORT
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible short circuit in
connections. Possible problem in injector coil . Possible problem in control unit.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

166

INJECTOR CYLINDER 6 / SHORT
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible short circuit in
connections. Possible problem in injector coil. Possible problem in control unit.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

167

INJECTOR CYLINDER 1 / OPEN
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem (or disconnected internally). Possible problem in control unit (capacitor).

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

168

INJECTOR CYLINDER 2 / OPEN
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem (or disconnected internally). Possible problem in control unit (capacitor).

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

169

INJECTOR CYLINDER 3 / OPEN
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem (or disconnected internally). Possible problem in control unit (capacitor).

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

16A

INJECTOR CYLINDER 4 / OPEN
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem (or disconnected internally). Possible problem in control unit (capacitor).

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary

16B

INJECTOR CYLINDER 5 / OPEN
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem (or disconnected internally). Possible problem in control unit (capacitor).

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

16C

INJECTOR CYLINDER 6 / OPEN
CIRCUIT

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem (or disconnected internally). Possible problem in control unit (capacitor).

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

16D

COMPRESSION TEST IN
PROGRESS

Compression Test in
progress.

After carrying out the compression
test, turn the key OFF (after-run).

16E

THE MINIMUM NUMBER OF INJECTIONS
WAS NOT REACHED: STOP THE ENGINE

More than 2 injectors not
operating

See individual faults in
injectors.

171

BENCH 1 CC

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem. Injectors short circuited.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

173

BENCH 2 CC

One or more injectors (bank 1 or
bank 2) not operating.

Possible injector connection
problem. Injectors short circuited.

Check wiring. Possible internal
problem also in ECM. Replace the injector if necessary.

17C

BENCH 1 INJECTORS CHECK (INTERNAL
ECU)

One or more injectors (bank 1 or
bank 2) may not be operating.

Fault in control unit.

Replace the engine control
unit.

189

EGR POWER ST. SHORT TO
BATT.

No fault perceived by the driver.
EGR not working.

Short circuit or EGR actuator
faulty.

Check wiring. Replace the EGR
actuator if necessary.

191

TURBINE ACTUATOR CONTROL
ELECTROVALVE

Poor performance

VGT actuator or wiring
defective

Check VGT wiring and
actuator.

192

TURBINE ACTUATOR CONTROL
ELECTROVALVE SHORT CIRCUIT TO POSITIVE

Poor performance

VGT actuator or wiring
defective.

Check VGT wiring and
actuator.

193

TURBINE WHEEL REVS SENSOR

Poor performance

Air filter blocked or turbine rpm
sensor signal implausible.

Check the air filter and check
parameters linked with the turbine by performing a road test (parameter acquisition).

198

FAULT ON AT LEAST TWO OF THE
FOLLOWING SENSORS: TURBINE SPEED, BOOT PRESSURE AND EXHAUST GAS PRESSURE

Poor performance

Sensor signal implausible. Sensor
may be faulty.

Determine which turbine component
caused the problem.

199

TURBOCHARGER CONTROL BOOST
PRESSURE FAILURE (PCR)

Poor performance

Turbo sensor or actuator may be
faulty. Air filter may be blocked.

Check turbine sensors and actuator
(parameter acquisition). Check whether air filter is blocked.

19A

TURBINE SPEED EXCEEDING EVERY
PERMITTED RANGE

Poor performance

Turbo sensor or actuator may be
faulty. Air filter may be blocked.

Check turbine sensors and actuator
(parameter acquisition). Check whether air filter is blocked.

19B

TURBINE IN OVERSPEED (THE FAULT IS
NOT DISPLAYED IF IT IS CAUSED BY A LOW ATMOSPERIC PRESSURE)

Poor performance

Air filter blocked or turbine rpm
sensor signal implausible.

Check the air filter and check
parameters linked with the turbine by performing a road test (parameter acquisition).

19F

NOx SENSOR ERROR

No effect perceived by the
driver.

Sensor signal implausible. Nox
sensor may be faulty.

Check the Nox sensor.

1A5

TIMEOUT OF CAN MESSAGE
DM1DCU

No effect perceived by the
driver

Problems in the Denoxtronic (on
the CAN line).

Check wiring. Check and correct
any faults in the Denoxtronic control unit

1A6

TIMEOUT OF CAN MESSAGE SCR1

No effect perceived by the
driver

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check
Denoxtronic control unit wiring and operation.

1AE

HUMIDITY SENSOR

No effect perceived by the
driver

Sensor short-circuited or
faulty.

Check wiring Replace sensor if
necessary.

1AF

SERIOUS EOBD FAULT FROM
DENOXTRONIC (EOBD FLASHING LIGHT)

No effect perceived by the
driver

Problems in AdBlue dosing
system.

Check the faults in the
Denoxtronic and consult the control unit troubleshooting guide.

1B1

ERROR ON CAN CONTROLLER A

No effect perceived by the
driver

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check
terminal resistances.

1B2

ERROR ON CAN CONTROLLER B

No effect perceived by the
driver

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check
terminal resistances.

1B3

ERROR ON CAN CONTROLLER C

No effect perceived by the
driver

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check
terminal resistances.

1B4

TIMEOUT CAN MESSAGE BC2EDC1

No effect perceived by the
driver

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check BC
wiring and operation.

1B5

TIMEOUT CAN MESSAGE VM2EDC

No effect perceived by the
driver.

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check VCM
wiring and operation.

1B7

ERROR ON MESSAGES CAN IN
TRANSMISSION

No effect perceived by the
driver.

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check ECM
wiring and operation.

1B9

ERROR ON THE EOBD LIGHT MANAGED BY
THE CLUSTER)

No effect perceived by the
driver.

MIL/Body Controller warning light
defective.

Consult the Body Controller
troubleshooting guide and check the CAN line.

1BA

TIMEOUT CAN MESSAGE DASH
DISPLAY

No effect perceived by the
driver.

CAN messages from VCM
inconsistent.

Consult the VCM troubleshooting
guide and check the CAN line.

1BC

TIMEOUT CAN MESSAGE AMBCOND

No effect perceived by the
driver.

CAN messages from VCM
inconsistent.

Consult the VCM troubleshooting
guide and check the CAN line.

1BD

TIMEOUT CAN MESSAGE CCVS

No effect perceived by the
driver.

CAN messages from VCM or BC
inconsistent

Consult the VCM/BC troubleshooting
guide and check the CAN line.

1C2

ERROR MESSAGE CAN ETC1

No effect perceived by the
driver.

CAN messages from ETC (gearbox)
inconsistent.

Check the ETC connection with the
CAN line.

1C3

TIMEOUT IN RECEIVING TC01 CAN
MESSAGE

No effect perceived by the
driver.

CAN messages from TCO
inconsistent.

Check the TCO connection with the
CAN line.

1C6

ERROR MESSAGE CAN TSC1-PE

No effect perceived by the
driver.

CAN messages from TCU
(Transmission Control Unit) inconsistent.

Check the TCU connection with the
CAN line.

1C8

ERROR MESSAGE CAN TSC1-VE

No effect perceived by the
driver.

CAN messages from TCU
(Transmission Control Unit) inconsistent.

Check the TCU connection with the
CAN line.

1D1

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Electrical interference or
internal control unit problems.

If the error persists to replace
ECU.

1D2

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Poor control unit
programming/flash Possible internal fault.

Reprogram the central unit. If the
error is repeated, replace the central unit, if needed.

1D3

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Poor control unit
programming/flash Possible internal fault.

Reprogram the central unit. If the
error is repeated, replace the central unit, if needed.

1D4

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Ecu internal failure.

If the error persists to replace
ECU.

1D5

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Ecu internal failure.

If the error persists to replace
ECU.

1D6

ECU INTERNAL ERROR (TPU)

Control unit deactivation.

Electronic interference or control
unit faulty.

If the error persists to replace
ECU.

1D8

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Ecu internal failure.

If the error persists to replace
ECU.

1E2

IMMOBILIZER

The engine fails to start.

Problem in CAN line or immobiliser
control unit.

Check the Immobiliser control unit
is correctly connected. Enter the Immobiliser PIN code during the emergency procedure.

1E3

ERROR FOR ECU INTERNAL
MONITORING

No effect perceived by the
driver.

Ecu internal failure.

f the error persists to replace
ECU.

1E4

ERROR FOR ECU INTERNAL
MONITORING

No effect perceived by the
driver.

Ecu internal failure.

If the error persists to replace
ECU.

1E5

SENSORS POWER SUPPLY FAULT
(12V)

No effect perceived by the
driver.

Excessive/insufficient battery
voltage or possible internal control unit problem.

Check battery voltage or
connections with the ECM. Replace the control unit if necessary.

1E6

SENSOR POWER SUPPLY 1

No effect perceived by the
driver.

Excessive/insufficient battery
voltage or possible internal control unit problem.

Check battery voltage or
connections with the ECM. Replace the control unit if necessary.

1E7

SENSOR POWER SUPPLY 2

No effect perceived by the
driver.

Excessive/insufficient battery
voltage or possible internal control unit problem.

Check battery voltage or
connections with the ECM. Check ECU, if required.

1E8

SENSOR POWER SUPPLY 3

No effect perceived by the
driver.

Excessive/insufficient battery
voltage or possible internal control unit problem.

Check battery voltage or
connections with the ECM. Replace the control unit if necessary

1E9

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Excessive/insufficient battery
voltage or possible internal control unit problem

Check battery voltage or
connections with the ECM. Replace the control unit if necessary.

1EA

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Excessive/insufficient battery
voltage or possible internal control unit problem.

Check battery voltage or
connections with the ECM. Replace the control unit if necessary.

1EB

ATMOSPHERIC PRESSURE SENSOR

No effect perceived by the driver.
Environmental pressure recovery value: 700 mbar.

Fault in sensor inside control
unit.

Change ECU.

1FA

TOO HIGH NUMBER OF REGENERATIONS
DEMAND

No reaction perceivable by the
driver. Too many filter regenerations carried out.

Particulate filter may be
blocked.

Check filter.

1FB

PERMANENT RIGENERATION ON TRAP
PARTICLE

No reaction perceivable by the
driver

Catalytic converter not installed
or damaged.

Check catalytic converter
visually.

1FC

FIRST SENSOR EXAUSTED GAS
TEMPERATURE

No reaction perceivable by the
driver.

Temperature sensors damaged or
incorrectly fitted.

Check information and condition of
sensors.

21F

TOO HIGH EFFICIENCY OF CATALYST
SYSTEM

No reaction noticeable on behalf
of the driver.

Actuator coil faulty or not within
specified tolerance limits.

Check actuator condition.

225

INTERRUPTED AFTERRUN

Slight power reduction.

The control unit is turned off by
the general switch instead of by the key (k15). Possible problem in main relay or connections.

Check wiring and then replace the
main relay.

228

MAIN RELAY — SHORT CIRCUIT TO
GROUND

Slight power reduction.

Short circuit in main relay or
relay faulty.

Check wiring between battery and
ECM and then replace the main relay

DTC

Failing component

Visible failure

Possible Cause

Repair action

232

COOLANT TEMPERATURE SENSOR
ABSOLUTE TEST

Slight power reduction

Extreme environmental conditions
or sensor incorrectly adjusted.

Ensure the engine is working in
non-critical conditions. Check the sensor connections and accuracy. Replace sensor if necessary.

238

OIL LOW PRESSURE

Slight power reduction

Sensor incorrectly adjusted or
faults in lubrication system.

Check the sensor connections and
accuracy. Check the lubrication system.

23A

OIL TEMPERATURE ABOVE
NORMAL

Slight power reduction

Sensor incorrectly adjusted or
faults in lubrication system.

Check the sensor connections and
accuracy. Check the lubrication system.

27C

BENCH 2 INJECTORS CHECK (INTERNAL
ECU)

One or more injectors (bank 1 or
bank 2) may not be operating

Fault in control unit.

Replace the engine control
unit.

292

TURBINE ACTUATOR CONTROL
ELECTROVALVE SHORT CIRCUIT TO GROUND

Poor performance

VGT actuator or wiring
defective

Check VGT wiring and
actuator.

2A6

TIMEOUT OF CAN MESSAGE SCR2

No effect perceived by the
driver

Problem in the Denoxtronic (on the
CAN line).

Check the faults in the
Denoxtronic and consult the control unit troubleshooting guide. Check wiring

2AF

SERIOUS EOBD FAULT FROM
DENOXTRONIC (EOBD FLASHING LIGHT)

No effect perceived by the
driver.

Problems in AdBlue dosing
system.

Check the faults in the
Denoxtronic and consult the control unit troubleshooting guide.

2B4

TIMEOUT CAN MESSAGE BC2EDC2

No effect perceived by the
driver.

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable

Check CAN line wiring. Check BC
wiring and operation.

2C6

TIMEOUT OF CAN MESSAGE TSC1-PE
PASSIVE

No effect perceived by the
driver.

CAN messages from TCU
(Transmission Control Unit) inconsistent.

Check the TCU connection with the
CAN line.

2C8

ERROR MESSAGE CAN TSC1-VR

No effect perceived by the
driver.

CAN messages from TCU
(Transmission Control Unit) inconsistent.

Check the TCU connection with the
CAN line.

2C9

ERROR MESSAGE CAN TIMEDATE

No effect perceived by the
driver.

CAN messages from TC (tachograph)
inconsistent.

Check the tachograph connection
with the CAN line.

2D3

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Poor control unit
programming/flash Possible internal fault.

Reprogram the central unit. If the
error is repeated, replace the central unit, if needed.

2FF

ERROR CHECK OF CRITICAL TIME FOR
OIL DILUTION

Slight power reduction

Oil over-diluted.

Change the engine oil.

392

TURBINE ACTUATOR CONTROL
ELECTROVALVE

Poor performance

Connection damaged. Battery
voltage excessive (ECU overheating).

Check VGT connection and
actuator.

3AF

SERIOUS EOBD FAULT FROM
DENOXTRONIC (EOBD FLASHING LIGHT)

No effect perceived by the
driver.

Problems in AdBlue dosing
system.

Check the faults in the
Denoxtronic and consult the control unit troubleshooting guide.

3C8

TIMEOUT OF CAN MESSAGE TSC1-VE
PASSIVE

No effect perceived by the
driver.

CAN messages from TCU
(Transmission Control Unit) inconsistent.

Check the TCU connection with the
CAN line.

3C9

ERROR MESSAGE CAN HRDV

No effect perceived by the
driver.

CAN configuration incorrect. CAN
connections defective. Terminal resistance not suitable.

Check CAN line wiring. Check BC
wiring and operation.

3D3

ECU OVERRUN MONITORING
ERROR

No effect perceived by the
driver.

Poor control unit
programming/flash Possible internal fault.

Reprogram the central unit. If the
error is repeated, replace the central unit, if needed.

3FA

REGENERATION DEMAND NUMBER
2

No effect perceived by the
driver.

Too many regenerations carried
out.

Check particulate filter and
faults in sensors.

4AF

SERIOUS EOBD FAULT FROM
DENOXTRONIC (EOBD FLASHING LIGHT)

No effect perceived by the
driver.

Problems in AdBlue dosing
system.

Check the faults in the
Denoxtronic and consult the control unit troubleshooting guide.

4C8

TIMEOUT OF CAN MESSAGE TSC1-VR
PASSIVE

No effect perceived by the
driver.

CAN messages from TCU
(Transmission Control Unit) inconsistent.

Check the TCU connection with the
CAN line.

4FA

REGENERATION DEMAND NUMBER
3

No effect perceived by the
driver.

Too many regenerations carried
out.

Check particulate filter and
faults in sensors.

5AF

DM1DCU SPN5 MESSAGE

No effect perceived by the
driver.

Problems in AdBlue dosing
system.

Check the faults in the
Denoxtronic and consult the control unit troubleshooting guide.

Visible Failure

Possible Cause

Repair action

Engine does not start

Inefficient battery.

Pre-heating resistor always on.
Check alternator efficiency. Check electrical connections at the battery terminals.

Starter inefficient.

Check / replace.

Air heater inefficient.

Check power supply and ground
connection. Check heater remote control switch with active diagnosis.

Main remote control switch (main
relay) inefficient.

Check fuse efficiency. Check
remote control switch with active diagnosis.

Fuel pump inefficient.

Check efficiency by checking the
filter input pressure. Check suction tightness.

Fuel pre-filter — filter
inefficient.

Check if clogged / change.

0.3 bar valve on fuel return
inefficient.

Check its efficiency. If blocked,
replace it.

Fuel circuit inefficient.

Check the system tightness and
carry out bleeding.

Engine overheating

Coolant level wrong

Check possible leaks and restore
the level.

Water pump and fan control belts
inefficient.

Check, adjust tension and change
components, if needed.

Water pump inefficient

Overhaul or change the
assembly.

Thermostat inefficient.

Check if it remains blocked in
closed position or partially open. Change.

Radiator inefficient.

Wash accurately and check if there
a re any fluid leaks. Change the component, if needed.

Air filter and circuit pipes
inefficient.

Make sure the manifolds and the
pipes are not clogged. Check the filter clogging indicator. Change the filter.

Cylinder head gasket
inefficient.

Check the water circuit pressure
an d change the cylinder head gaskets.

Fan inefficient.

Replace.

Engine lacks power

Fuel circuit inefficient.

Check if the mesh filter in the
tank , the fuel pre-filter and filter are clogged; in this case change them. Check if the 0,3 bar valve on the fuel return is blocked in open position (low pressure) or in closed
position (high temperature), and then replace it. Check possible circuit leaks and the fuel pump efficiency.

Injectors inefficient

Seizure of the plunger of one of
the injectors may occur or fuel may leak through the O — Ring. Carry out the ’Engine Test and proceed according to the instructions displayed.

Engine air suction circuit
inefficient.

Remove circuit necks and replace
the air filter if clogged. Check the cartridge clogging indicator

Exhaust gas circuit
inefficient.

Eliminate exhaust manifold
leaks

Working temperature not
correct.

Check cooling system.

VGT actuator inefficient.

Carry out the Engine Test on the
basis of the instructions displayed by the diagnosis instrument.

Turbo-compressor
inefficient.

Carry out the Engine Test on the
turbine and check integrity of the following turbo-compressor components: — rotating blades; — bearings; — modulating valve; — VGT filter clogged; — turbine actuator; Change
faulty component. Engine Test with Modus IT2000 E.A.SY..

Injection mechanical system
inefficient.

Check wear of the injector rocker
arms, the roller, the rocker arm bushes and the camshaft tappets.

Valve clearance
inefficient.

Adjust valve clearance.

Engine brake low efficiency

Head gasket inefficient.

Head grinding and change
gasket.

Injector holder inefficient

Replace it.

Turbo-compressor cooling system
tightness inefficient.

Overhaul turbine.

Bad fuel quality.

Check if there is water in the
reservoir and remove it.

Engine smoke is light blue

Piston rings inefficient

Overhaul piston-cylinder
assembly

Turbo-compressor lubrication
system tightness inefficient.

Overhaul turbine.

Valve oil seal tightness
inefficient.

Change valve guide gasket.

Engine brake low efficiency

Engine brake components
inefficient.

Check correct operation of engine
brake actuator cylinders of control solenoid valve. Check cylinder control oil pipe tightness. Check exhaust valve clearance.

Turbo-compressor
inefficient.

VGT blocked in open position. VGT
actuator faulty (tie rod blow-by). Modulating valve faulty. Wrong air supply to modulating valve. Change inefficient components.

Engine stops

Fuel in the reservoir.

Carry out bleeding after
refueling.

Inefficiency of mesh filter, fuel
pre-filter and filter.

Clean the mesh filter and replace
the pre-filter and filter.

Reservoir pipes not correctly
connected.

If the pipes are inverted, the
vehicle can be turned off after 200 300 km even if the reservoir is without fuel because the engine fuel pipe has a lower height of suction. Invert the pipes.

Excessive or insufficient oil
pressure

Overpressure valve works not
correctly

Check and replace, if
needed.

Oil pump and oil delivery pipes
inefficient.

Check and replace, if
needed

Main journals and connecting rod
bearings inefficient

Replace bearings and rectify the
crankshaft, if needed.

Engine oil SAE viscosity not
correct

Change the engine oil with one
having the right viscosity

Excessive fuel consumption

Air filter inefficient.

Change.

Fuel reservoir and pipes
inefficient.

Eliminate possible leaks and
replace worn out components.