P0016 ошибка шевроле блейзер

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P0016 is know to occur in the Chevy Trailblazer when the Crankshaft Position Sensor and the Camshaft Position Sensor are out of alignment by a certain number of degrees, or if there is a sensor issue. We’ll explore the symptoms and causes directly below.

P0016 refers to which camshaft position sensor is out of time with the Crankshaft.

P0016 Symptoms

P0016 should be considered an important trouble code to diagnose and repair. The crank and cam sensors work in tandem to produce the ideal air/fuel ratio for your engine. When this timing is off, the engine will typically not run (or barely run)

Here are the major symptoms of P0016 in the Trailblazer:

• Failure to start
• Rattle coming from the motor
• Service engine soon light
• Engine poorly running

P0016 Causes and Solutions: Chevy Trailblazer

Here are the most common causes of P0016 in the Trailblazer, as well as diagnostic advice, and resources to further explore. It’ll either be a wiring issue, or it’ll be a physical problem (bad reluctor or timing chain jumped).

Wiring Issues

One of the most common causes of P0016 in any vehicle is going to be wiring issues. You’ll want to inspect the wiring harness for visible damage. A lot of the harness leading to and from the Crank/Cam sensors is going to be exposed to hot exhaust and vibration. This is a great place to start diagnosing P0016 in your Chevy Trailblazer. It’s quick and easy to do this before moving on to the sensors themselves.

Make sure to check the harness where it plugs into both sensors as well.

How to Diagnose Vehicle Wiring Problems (AA1 Car)

Bad Sensors

After examining the wiring harness, it would be time to check the sensors themselves. Using a simple voltage tester, you’ll be able to determine whether or not they are functioning correctly. We linked to a great video showing you how to do so directly below.

How to test a crankshaft or camshaft sensor (YouTube)

Timing

The timing chain or belt will throw cause P0016 to throw. This will happen when it has stretched or jumped a tooth or two. If it jumps more than a few teeth, the odds are that the engine itself will not run at all.

If you’ve recently changed the timing chain, it may very well have not been aligned properly on install. Many manufacturers (particularly Japanese Auto Makers) have very strict timing chain service intervals. If it’s been too long, it may jump a few teeth. Even the slightest misalignment can cause P0016.

Timing Chain Jumped Symptoms and Diagnosis

Crankshaft Position Sensor (Amazon Low Price)

Camshaft Position Sensor (Amazon)

Crank or Cam Tone/Reluctor Ring

The Crankshaft Sensor is going to use a tone or reluctor ring to determine the position of the Crank. This ring uses notches that are scanned by the Crank Sensor in order to get an accurate position.

If this ring fails, the vehicle will not be able to get an exact crank position. The camshaft typically will have a ring that provides the same function.

Often when a reluctor ring goes bad, it’ll rattle quite a lot. That is a very good indication that there is an issue with it.

Here’s a good video on diagnosing P0016:

Conclusion

Good luck diagnosing P0016 in the Chevy Trailblazer. If there is anything you would like to add, please leave a comment below.

What Does Chevrolet Trailblazer Code P0016 Mean?

• Chevrolet Trailblazer P0016 definition: The correlation of the camshaft and crankshaft positions on bank 1 is incorrect based on the intake camshaft position sensor.
• Issue Severity: SEVERE – Stop driving immediately
• Repair Urgency: Fix this code immediately (same day if possible) to avoid internal engine damage.
• Diagnosis: This trouble code can cause the vehicle to be hard to start and run rough. In some cases, the vehicle may not be driveable. It should be addressed as soon as possible.

In order for the engine to run smoothly and efficiently, it has to know exactly what positions the camshaft and crankshaft are in their rotation. It does this by monitoring them using the Camshaft Position Sensor(s) and Crankshaft Position Sensor. If the Engine Control Module (ECM) detects that the bank 1 intake camshaft and crankshaft are not in the correct position, it will trigger code P0016.

Most Likely Repair And Cost For Chevrolet Trailblazer P0016 By Year

The chart below shows the most likely repair and cost range for Trailblazers for all of the years that FIXD has data on.

Chevrolet Trailblazer P0016 Causes

There are many potential causes of code P0016.

• Stretched timing chain
• Jumped timing
• Slipped reluctor ring on the crankshaft
• Slipped reluctor ring on bank 1 exhaust camshaft
• Faulty timing chain tensioner
• Low/dirty oil
• P0016 is not one of the top 5 trouble codes for the Chevrolet Trailblazer but, it is still a common one.

Chevrolet Trailblazer P0016 Symptoms

• Check Engine Light
• Rough running engine
• Poor fuel economy
• Decreased engine performance
• Timing chain noise
• Hard/extended start
• No start
• No noticeable adverse conditions in some cases

How Do I Fix Chevrolet Trailblazer Code P0016?

With a cam or crank position sensor fault, the first step is to get it diagnosed to figure out what is causing the problem.

If your vehicle has this fault and you’re not comfortable diagnosing this issue at home, we recommend finding a RepairPal certified shop nearby to pinpoint the problem and give an accurate estimate for repairs.

These shops can not only help you figure out what’s going wrong before you waste time and money on the wrong parts, but they also offer a minimum 12-month, 12,000-mile warranty and stand behind all their estimates with guaranteed fair pricing.

> Find a RepairPal Certified Shop Near You

How Much Does It Cost to Fix Chevrolet Trailblazer Code P0016?

P0016 can be caused by anything from a stretched timing belt or chain to a bad sensor to dirty oil. It’s impossible to give an accurate estimate without properly diagnosing the issue first.

If you take your car to a shop for diagnosis, most shops will start with an hour of “diag time” (the time spent in labor diagnosing your specific issue). Depending on the shop’s labor rate, this typically costs somewhere between $75-$150. Many, if not most, shops will apply this diagnosis fee to any required repairs if you have them perform the repairs for you. From there, a shop will be able to give you an accurate estimate for repairs to fix your P0016 code.

Other Possible Repairs for Chevrolet Trailblazer Code P0016

For error code P0016, one or more of the below repairs may be needed to solve the underlying issue. For each possible repair, the estimated cost of repair includes the cost of the relevant parts and the cost of labor required to make the repair.

• Engine oil and filter change $20-$60
• Camshaft position sensor: $176 to $227
• Crankshaft position sensor: $168 to $224
• Reluctor ring $200-$600
• Timing belt: $309 to $390
• Timing chain: $1,624 to $1,879

DIY Steps to Diagnose Chevrolet Trailblazer Code P0016

Engine code P0016 could be caused by a number of things, including a stretched timing belt or chain, a bad sensor, or even dirty oil. If you’d like to try to fix code P0016 at home without throwing money at parts, you’ll want to follow the steps below for proper diagnosis. Keep in mind this is an advanced-level diagnosis and repair and not recommended for beginners. Diagnosis requires more specialized equipment beyond what the FIXD Sensor can provide and it can be a time and labor-intensive process for inexperienced DIYers.

DIY difficulty level: Advanced

This repair requires mechanical knowledge and is not recommended for beginners.

Tools/parts needed:

• FIXD
• Basic Hand Tools
• Vehicle-Specific Service Manual
• Oscilloscope

STEP 1: USE FIXD TO ENSURE NO OTHER ENGINE CODES ARE PRESENT

Use FIXD to scan your vehicle to verify P0016 is the only code present.

STEP 2: CHECK ENGINE OIL LEVEL

Check the oil level and if incorrect, correct to the proper level. If it’s dirty, replace the engine oil and filter. Clear the code, and see if it comes back.

STEP 3: CHECK FOR TECHNICAL SERVICE BULLETINS

Check for any Technical Service Bulletins (TSB) for your make and model vehicle. For example, certain General Motors vehicles (GMC, Chevrolet, Buick, Cadillac) have a known issue with stretched timing chains, which can cause this fault. If a TSB applies to your vehicle, perform this service first.

STEP 4: COMPARE SENSOR DATA USING AN OSCILLOSCOPE

This code requires an oscilloscope for proper diagnosis. Not all shops are equipped with this but many are. Using the O-scope (oscilloscope), connect to the signal wire for the crankshaft position sensor and bank 1 and bank 2 (if equipped) camshaft position sensors and compare the three (or two) to each other. If they are offset from their proper locations, a stretched timing chain, jumped timing, or a slipped reluctor ring is the issue. Replace the necessary parts to resolve the concern.

Common Chevrolet Trailblazer P0016 Diagnosis Mistakes

Not checking for TSBs before starting diagnosis.

Still Need Help Fixing Chevrolet Trailblazer Code P0016?

If you’ve followed the steps above and are still experiencing Chevrolet Trailblazer check engine code P0016, please contact the FIXD Mechanic Hotline if you’re a FIXD Premium subscriber or find a RepairPal certified shop near you to get the right repairs at a fair price.

Fixed It But The Check Engine Light Is Still On?

Check engine light sometimes need to be reset manually, check out our article:

How to Reset Your Check Engine Light | 4 Ways To Clear It (With or Without a Scanner)