Powertrain
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Lights the check engine lamp
P2B40: A Camshaft Position Actuator Position Sensor B Range/Performance Bank 1
Standardized SAE J2012 code · P2Bxx codes
What does P2B40 mean?
The position sensor B of the camshaft position actuator on the intake side of bank 1 reports a range/performance condition. Cam phasing position cannot be measured reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Common causes
- High Sensor offset drifted
- Medium Actuator mechanism worn
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2B40 on the same make and model first.
P2B40 in the community
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Describe your P2B40 problemRelated codes
- P2B44 A Camshaft Position Actuator Position Sensor B Range/Performance Bank 2
- P2B48 B Camshaft Position Actuator Position Sensor B Range/Performance Bank 1
- P2B4C B Camshaft Position Actuator Position Sensor B Range/Performance Bank 2
- P34AD A Camshaft Position Actuator Position Sensor A Range/Performance Bank 1
- P34B1 A Camshaft Position Actuator Position Sensor A Range/Performance Bank 2
- P34BD B Camshaft Position Actuator Position Sensor A Range/Performance Bank 1
- P34C1 B Camshaft Position Actuator Position Sensor A Range/Performance Bank 2