Camshaft Position Sensor Range/Performance Problem (Bank 1)
The camshaft position sensor is sending an incorrect reading to the engine control module.
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What it means (plain English)
The camshaft position sensor tracks the position of the camshaft to help the computer control the engine timing. If it sends bad data, the engine may run poorly or have trouble starting.
What the computer is actually seeing
The Engine Control Module (ECM) looks for a consistent signal from the camshaft position sensor that reflects the camshaft's position. If it does not see expected readings, it sets a code.
What a healthy reading looks like
The camshaft position sensor should output a voltage between 0.5V and 4.5V, usually fluctuating to indicate the camshaft's rotation. If the signal is outside this range, a trouble code will set.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors going to the camshaft position sensor for damage or corrosion.
- 22. Check for proper oil level and condition; contaminated oil can lead to sensor failure. Change if necessary.
- 33. Measure the voltage at the camshaft position sensor while cranking; it should be within 0.5V to 4.5V.
- 4 - If voltage is correct, replace the sensor.
- 5 - If voltage is incorrect, check wiring to the ECM and ground connections.
- 64. Inspect the timing chain/belt for wear or misalignment; ensure it is within spec and properly tensioned.
- 75. If all checks pass, consider an ECM update or replacement.
Common causes
- Faulty camshaft position sensor
- Damaged wiring or connectors to the sensor
- Timing chain/belt issues
- Oil contamination affecting sensor operation
- ECM failure
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally drivable, but performance issues may arise, and it’s best to fix soon.
Will this code come back after clearing?
If the underlying issue isn't resolved, the code will likely return.
Why does this code sometimes pair with misfire codes?
Since camshaft position affects valve timing, any irregularities can lead to misfires.
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