P0017 Code: Resolve Camshaft Position Correlation Bank 1 Issue

Last Updated on October 8, 2026

It’s normal to feel concerned when your vehicle’s check engine light suddenly comes on.

You may be driving normally when the warning light appears, leaving you wondering whether it’s safe to continue.

If your OBD2 scanner shows the P0017 code, the engine computer has detected a problem with the timing relationship between the crankshaft and camshaft.

This can happen because of a stretched timing chain, a faulty variable valve timing (VVT) component, an incorrect sensor signal, or an engine oil problem.

However, P0017 doesn’t automatically mean your timing chain needs replacing.

Some vehicles continue running normally, while others develop rough idling, reduced power, hard starting, or unusual engine noises.

In this guide, we’ll explain the P0017 code meaning, common symptoms, possible causes, and how to diagnose and fix the problem before spending money on unnecessary repairs.

What Does the P0017 Code Mean?

The P0017 code stands for:

“Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor B).”

The crankshaft controls piston movement, while the camshaft operates the engine’s valves.

Both must work together at the correct timing.

The engine control module (ECM) monitors signals from the crankshaft and camshaft position sensors to check that relationship.

If the camshaft position differs from what the computer expects, it may store P0017.

Here’s what the code description means:

• Bank 1: The side of the engine containing cylinder number one.
• Sensor B: Usually refers to the exhaust camshaft on engines with separate intake and exhaust camshaft monitoring.
• Correlation: The timing relationship between the camshaft and crankshaft.

The exact sensor arrangement depends on your engine.

Important: P0017 identifies a timing correlation problem. It does not confirm whether the cause is mechanical timing, a VVT fault, or an incorrect sensor signal.

A related code, P0016, checks the crankshaft’s correlation with Bank 1 Sensor A instead. Comparing the two codes can help identify which camshaft timing system needs attention.

Common Symptoms of the P0017 Code

The symptoms depend on how far the timing differs from the expected position and what caused the problem.

Common warning signs include:

• Check Engine Light: The most obvious symptom. The light usually stays on until the underlying fault is resolved.
• Hard Starting: The engine may crank longer than normal before starting.
• Rough Idling: Engine speed may fluctuate or the vehicle may shake while stopped.
• Reduced Engine Power: Acceleration may feel weak or delayed.
• Engine Stalling: The engine may shut off unexpectedly in some cases.
• Poor Fuel Economy: Incorrect valve timing can reduce engine efficiency.
• Rattling Noises: A worn timing chain or tensioner may produce noise, particularly during startup.
• Engine Misfires: Incorrect mechanical timing can contribute to uneven combustion.

Not every vehicle will experience all these symptoms.

Some engines may store P0017 while appearing to run normally. If that’s happening, our guide to why the check engine light is on even when the car runs fine explains why an apparently normal-running engine can still need diagnosis.

If your vehicle shakes, hesitates, or runs unevenly, you can also compare those symptoms with our guide to engine misfire symptoms.

That’s why the trouble code should be investigated even if the vehicle still drives.

What Causes the P0017 Code?

Several mechanical and electrical problems can cause P0017.

1. Stretched Timing Chain or Worn Timing Belt

The timing chain or belt keeps the camshaft and crankshaft synchronized.

If it stretches, slips, or becomes incorrectly positioned, the camshaft may no longer rotate at the expected timing.

Worn tensioners and guides can also contribute to timing problems.

This is an important possibility, especially if you hear rattling from the timing cover area.

However, P0017 alone does not prove that the timing chain is defective.

2. Faulty Camshaft or Crankshaft Position Sensor

The engine computer uses these sensors to monitor shaft positions.

A faulty sensor, damaged connector, or interrupted signal can prevent the ECM from correctly interpreting the timing relationship.

The sensor should be tested before replacement.

3. Variable Valve Timing (VVT) Problems

Many modern engines use variable valve timing to change camshaft position during operation.

A sticking camshaft phaser or faulty VVT solenoid may prevent the camshaft from reaching the position commanded by the ECM.

This can cause the computer to detect a timing mismatch.

If your scanner also shows P0014, an exhaust camshaft timing over-advanced code, inspecting the VVT system becomes especially important.

4. Low, Dirty, or Incorrect Engine Oil

On engines with oil-operated VVT systems, engine oil plays an important role in controlling camshaft timing.

Possible problems include:

• Low engine oil level
• Incorrect oil viscosity
• Sludge or contamination
• Low oil pressure
• Restricted oil passages

These conditions may affect camshaft phaser operation.

However, an oil change will not fix a damaged timing chain or faulty sensor.

5. Damaged Tone Ring or Reluctor Wheel

Camshaft and crankshaft position sensors read rotating targets that help identify shaft position.

If a reluctor wheel becomes damaged, loose, or displaced, the sensor may send an incorrect timing signal.

The sensor itself could still be functioning properly.

6. Damaged Wiring or Loose Connectors

Corroded terminals, broken wires, or loose connectors can interrupt sensor signals.

These electrical problems may produce intermittent faults, especially when the engine vibrates or warms up.

7. Incorrect Timing After Engine Repairs

If the timing chain, belt, camshaft, or related parts were recently replaced, incorrect installation may cause P0017.

A small timing alignment error can sometimes be enough for the ECM to recognize an unexpected relationship.

How to Diagnose the P0017 Code

A proper diagnosis helps you determine whether the fault involves oil control, electrical signals, or mechanical timing.

Step 1: Scan for Related Trouble Codes

Connect an OBD-II scanner and confirm that P0017 is stored.

Check for related codes such as P0016, P0014, P0015, or camshaft sensor circuit faults.

These additional codes may help narrow down the problem.

Record the freeze-frame data, which may show engine RPM, temperature, and load when the fault occurred.

Step 2: Check Engine Oil

Before replacing sensors or timing components, check the engine oil level and condition.

Make sure the oil meets the manufacturer’s viscosity and specification requirements.

If the oil is overdue for replacement, contaminated, or incorrect for the engine, address that problem first.

If the oil pressure warning light is on, stop the engine and investigate the pressure issue before driving.

Step 3: Inspect Sensor Wiring

Locate the camshaft and crankshaft position sensors using your vehicle’s repair manual.

Check their wiring and connectors for:

• Damaged insulation
• Loose connections
• Corrosion
• Broken or pinched wires
• Oil contamination around connectors

Repair confirmed wiring problems before replacing the sensors.

Step 4: Test Camshaft and Crankshaft Signals

The correct testing procedure depends on the type of sensor installed.

Some sensors use a magnetic pickup design, while others use Hall-effect technology.

A technician may use an oscilloscope to compare camshaft and crankshaft signal patterns.

A basic resistance measurement cannot reliably test every electronic sensor.

Do not replace a sensor simply because P0017 is present.

Step 5: Inspect the VVT System

If the engine uses variable valve timing, check whether the relevant camshaft phaser responds correctly.

A technician may inspect the oil control valve, check for blockages, and compare commanded camshaft timing with actual timing using a compatible scan tool.

A sticking VVT solenoid or phaser can cause incorrect camshaft positioning.

Step 6: Check Mechanical Timing

If the sensors, wiring, oil, and VVT components appear normal, mechanical timing should be inspected.

A technician may check:

• Timing chain or belt alignment
• Chain tensioners and guides
• Camshaft and crankshaft timing marks
• Camshaft sprockets
• Reluctor wheel condition

This inspection can require special tools and partial engine disassembly.

How to Fix the P0017 Code

The correct repair depends on the fault identified during diagnosis.

1. Repair or Replace the Timing Chain or Belt

If mechanical testing confirms a stretched, slipped, or damaged timing chain or belt, the timing system must be repaired.

Depending on the engine, related tensioners, guides, and sprockets may also need replacement.

Timing repairs require precise alignment and should follow the manufacturer’s procedure.

2. Replace a Confirmed Faulty Sensor

If testing confirms that the camshaft or crankshaft position sensor is faulty, replace it with a compatible part.

Inspect the mounting area and electrical connector during installation.

Replacing both sensors without testing is unnecessary.

3. Repair the Oil Control Valve or VVT System

If the oil control valve is sticking or restricted, inspect it according to the manufacturer’s instructions.

Some valves may be cleaned, while others require replacement.

Do not apply battery voltage directly to the solenoid unless the manufacturer’s testing procedure specifically allows it.

If the camshaft phaser is damaged, replacing the solenoid alone may not solve the problem.

4. Repair a Damaged Reluctor Wheel

If the camshaft or crankshaft reluctor wheel is loose, damaged, or incorrectly positioned, repair or replace the affected component.

The exact procedure depends on its location and engine design.

5. Repair Wiring and Connectors

Repair damaged wires and corroded terminals using suitable automotive wiring repair methods.

Make sure the connectors are secure and the wiring is properly routed.

6. Change Engine Oil and Filter When Needed

If the oil is overdue for service, contaminated, or the wrong specification, replace it with the correct oil and filter.

An oil change can help restore proper VVT operation when oil condition is the actual cause.

However, it should not be presented as a guaranteed P0017 repair.

7. Check for Applicable Software Updates

Some manufacturers release technical service bulletins addressing timing correlation faults.

If an applicable update exists, a dealership or qualified repair shop may need to reprogram the ECM.

ECM replacement should only be considered after proper testing.

8. Clear the Code and Verify the Repair

After completing the necessary repair, clear the trouble code using a compatible scanner.

If the vehicle is safe to operate, perform the recommended drive cycle.

Check whether P0017 returns and confirm that the original symptoms have been resolved.

Some vehicles may require a manufacturer-specific camshaft or crankshaft relearn procedure after certain repairs.

How Much Does It Cost to Fix the P0017 Code?

Repair costs depend on the vehicle, the faulty component, and labor rates.

Here are approximate U.S. estimates:

Repair Type	Estimated Cost (Parts + Labor)
Professional Diagnosis	$100–$200+
Engine Oil and Filter Change	$60–$150+
Camshaft or Crankshaft Sensor Replacement	$120–$450+
VVT Solenoid or Oil Control Valve	$150–$500+
Wiring or Connector Repair	$100–$350+
Reluctor Wheel Repair	Varies by Engine
Timing Chain or Belt Repair	$500–$3,000+

These are broad estimates rather than guaranteed prices.

A complicated timing chain repair may cost considerably more because of the labor involved.

Can You Drive with a P0017 Code?

A vehicle with P0017 may continue running, but driving safety depends on the underlying cause.

If the check engine light is steady and the engine runs normally, carefully driving a short distance to a repair facility may be possible.

However, avoid unnecessary driving until the problem has been diagnosed.

Stop driving as soon as it is safe if:

• The engine makes severe rattling or knocking noises.
• The engine repeatedly stalls.
• The check engine light flashes.
• The vehicle loses significant power.
• You suspect the timing chain or belt has slipped.

If you’re unsure how urgent the warning is, our guide to what to do when the check engine light comes on explains the warning signs that require immediate attention.

A mechanical timing failure can cause severe engine damage on some engines.

If the engine has a serious timing problem, towing is safer than continuing to drive.

Where Is the Camshaft Position Sensor Located?

The camshaft position sensor is commonly located near the cylinder head, timing cover, or valve cover.

However, its exact position depends on the engine.

Some vehicles have several camshaft position sensors.

For P0017, Sensor B usually refers to the exhaust camshaft sensor on Bank 1, but the manufacturer’s information should be used to confirm the correct sensor.

Related OBD-II Trouble Codes

If your vehicle has P0017, you may also encounter related codes.

• P0012: “A” Camshaft Position – Timing Over-Retarded (Bank 1)
• P0013: “B” Camshaft Position Actuator Circuit (Bank 1)
• P0014: “B” Camshaft Position – Timing Over-Advanced or System Performance (Bank 1)
• P0015: “B” Camshaft Position – Timing Over-Retarded (Bank 1)
• P0016: Crankshaft/Camshaft Position Correlation (Bank 1 Sensor A)
• P0018: Crankshaft/Camshaft Position Correlation (Bank 2 Sensor A)
• P0019: Crankshaft/Camshaft Position Correlation (Bank 2 Sensor B)

These codes do not necessarily occur together, but they can provide useful information about the affected camshaft or timing system.

How to Prevent P0017 Problems

Not every timing-related failure can be prevented, but regular maintenance may reduce the risk.

• Use the correct engine oil and change it at the recommended intervals.
• Check and maintain the proper oil level.
• Replace timing belts according to the manufacturer’s schedule.
• Investigate timing chain noises promptly.
• Repair wiring damage and oil leaks when discovered.
• Address engine performance problems before they become more serious.

Timing chains generally do not have the same routine replacement intervals as timing belts, so always follow your vehicle’s service recommendations.

FAQs About the P0017 Code

Is P0017 Always a Timing Chain Problem?

No. A stretched or slipped timing chain is one possible cause, but VVT problems, sensor signal faults, oil-related issues, and damaged reluctor wheels can also trigger P0017.

Can Low Engine Oil Cause P0017?

Yes. On engines with oil-operated variable valve timing, low oil level or pressure may affect camshaft position and trigger a correlation fault.

Will Replacing the Camshaft Sensor Fix P0017?

Only if testing confirms the sensor or its signal is faulty. Replacing the sensor won’t correct a slipped timing chain or defective camshaft phaser.

Can a Bad Oil Filter Cause P0017?

An incorrect or severely restricted oil filter may affect oil supply under certain conditions, but it is not a universal or primary cause of P0017.

How Serious Is the P0017 Code?

It can be serious if caused by mechanical timing problems. Prompt diagnosis is important, especially when the engine makes unusual noises, stalls, or loses power.

What Is the Difference Between P0016 and P0017?

Both indicate crankshaft-camshaft timing correlation problems. P0016 involves Bank 1 Sensor A, while P0017 involves Bank 1 Sensor B.

Conclusion

The P0017 code means the engine computer has detected an incorrect timing relationship between the crankshaft and Bank 1 Sensor B camshaft.

Although a stretched timing chain may be responsible, oil-related VVT faults, damaged wiring, faulty sensors, or reluctor wheel problems can produce similar results.

Start with a code scan, oil inspection, and basic electrical checks before considering expensive timing repairs.

If the issue involves mechanical timing or requires advanced signal testing, a qualified technician can help identify the actual cause.

Diagnosing P0017 correctly is the best way to restore reliable engine performance and avoid replacing parts that weren’t causing the problem.