P34B3A Camshaft Position Actuator Position Sensor A Circuit High Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P34B3 marks a signal above the upper limit from position sensor A on the intake phaser of bank 2. An interrupted ground, a signal wire touching a supply voltage or a worn-out sensor are the usual findings. No carmaker publishes the code. The nearest documented case is Mitsubishi's bank 1 code P34AF on the 2022 Outlander: the high value must persist for at least a second, and the Hall sensor of the actuator motor is listed as a possible cause. With an electric phaser the sensor therefore sits inside the actuator, and a sensor fault usually means replacing the actuator. NTN-SNR lists P34B3 as the inlet-side position sensor A on the second bank with too high a signal. The engine keeps running with the bank 2 phaser at its base angle.
- What you may notice
- Check engine light on
- Bank 2 intake phaser held at its base angle
- Likely causes
- LikelySensor ground interrupted
- PossibleSignal wire touching a supply voltage
- PossibleHall sensor in the actuator defective (actuator replacement)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €950
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.