OBD-II code · Powertrain (manufacturer / generic)
P34BA B Camshaft Position Actuator Temperature Sensor Circuit Low Bank 2
Cam actuator B temperature sensor on bank 2 signal voltage below expected range. The camshaft position sensor identifies which cylinder is on the compression stroke — without it the ECM cannot run sequential injection or coil-on-plug ignition correctly.
Is it safe to drive with P34BA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal wire shorted to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
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
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Cam Actuator B Temp Sensor B2, Sensor Wiring
Related codes
- P34A6A Camshaft Position Actuator Temperature Sensor Circuit Low Bank 1
- P34AAA Camshaft Position Actuator Temperature Sensor Circuit Low Bank 2
- P34B6B Camshaft Position Actuator Temperature Sensor Circuit Low Bank 1
- P34B7B Camshaft Position Actuator Temperature Sensor Circuit High Bank 1
- P34B8B Camshaft Position Actuator Temperature Sensor Circuit Bank 2
- P34B9B Camshaft Position Actuator Temperature Sensor Range/Performance Bank 2
- P34BBB Camshaft Position Actuator Temperature Sensor Circuit High Bank 2
- P34BCB Camshaft Position Actuator Position Sensor A Circuit Bank 1
- P34BDB Camshaft Position Actuator Position Sensor A Range/Performance Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.