P34ABA Camshaft Position Actuator Temperature Sensor 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
- P34AB stands for a voltage above the upper limit at the temperature sensor of intake cam actuator A, bank 2. An interrupted signal or ground line is the classic cause, as is a short to a higher voltage; a plug pushed off during a service visit often explains it. Because the actuator motor warms up under load, the controller depends on this value – the Aisin patent lowers the current step by step while a high temperature persists – and without it the bank 2 phaser is usually held back. NTN-SNR names the code for the inlet side of the second bank; no carmaker publishes it. The bank 1 equivalent is P34A7, the low code P34AA.
- What you may notice
- Check engine light on
- Intake phasing on bank 2 held back
- Likely causes
- LikelyPlug at the actuator off or not latched after service
- PossibleSignal or ground wire interrupted
- RareSignal shorted to a higher voltage
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €750
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.