What it means
A Camshaft Position Actuator Position Sensor C Range/Performance (Bank 1): the signal is implausible or outside the valid range. This relates to engine timing; a fault can cause rough running, a no-start, or timing errors.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The Bank 1 camshaft position actuator position sensor C tells the ECM where that camshaft actuator is positioned. This code sets when the signal is present but its value or response falls outside the expected range or performance pattern, rather than simply indicating an electrical circuit fault.
Common causes
Most likely first.
- Sensor drift
- Sensor element aged beyond calibration window
- Sensor mounting loose - signal damping
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
How to diagnose it
- Review freeze-frame data and compare commanded and reported Bank 1 camshaft actuator position, if available.
- Inspect the Bank 1 sensor C mounting and connector for looseness, contamination, or damage that could distort the reading.
- Check the sensor harness and terminals for intermittent contact, then verify supply and ground against the manufacturer's specification.
- Observe the sensor response as the Bank 1 actuator is commanded through its operating range and note whether it follows smoothly.
- If the sensor signal is plausible, inspect the Bank 1 actuator and timing mechanism for sticking or mechanical timing problems.
Common fixes
- Secure the Bank 1 sensor C mounting and repair any loose connector terminals.
- Clean or repair the Bank 1 sensor C connector and wiring if contamination or damage is found.
- Replace the Bank 1 camshaft actuator position sensor C if its signal drifts or fails the manufacturer's test.
- Repair a sticking Bank 1 actuator or timing mechanism if confirmed.
Can I keep driving?
Drive gently and avoid high engine loads until the Bank 1 timing feedback is checked. If rough idle, stalling, or pronounced power loss occurs, stop driving because camshaft control may be unreliable.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.