OBD-II code · Powertrain (generic, extended)
P2B4B B Camshaft Position Actuator Position Sensor B Circuit Bank 2
The position sensor B of the camshaft position actuator on the exhaust side of bank 2 reports a circuit condition. Cam phasing position cannot be measured reliably.
Is it safe to drive with P2B4B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPosition sensor failed
- PossibleWiring or connector fault
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- B Camshaft Position Actuator Pos Sensor B B2, Wiring Harness, Ecm
Related codes
- P2B3FA Camshaft Position Actuator Position Sensor B Circuit Bank 1
- P2B43A Camshaft Position Actuator Position Sensor B Circuit Bank 2
- P2B47B Camshaft Position Actuator Position Sensor B Circuit Bank 1
- P34ACA Camshaft Position Actuator Position Sensor A Circuit Bank 1
- P34B0A Camshaft Position Actuator Position Sensor A Circuit Bank 2
- P34BCB Camshaft Position Actuator Position Sensor A Circuit Bank 1
- P34C0B Camshaft Position Actuator Position Sensor A Circuit Bank 2
- P2B48B Camshaft Position Actuator Position Sensor B Range/Performance Bank 1
- P2B49B Camshaft Position Actuator Position Sensor B Circuit Low Bank 1
- P2B4AB Camshaft Position Actuator Position Sensor B Circuit High Bank 1
- P2B4CB Camshaft Position Actuator Position Sensor B Range/Performance Bank 2
- P2B4DB Camshaft Position Actuator Position Sensor B Circuit Low Bank 2
- P2B4EB Camshaft Position Actuator Position Sensor B Circuit High Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.