P34BBB 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
- P34BB is stored when the bank 2 exhaust actuator's temperature signal stays above its window – typically a broken signal line, a loosened ground connection or contact with a supply wire. Because the module can no longer see how warm the actuator driver is, it lacks what it needs to protect it; Aisin's design, for comparison, ends its current reduction only after the reading has stayed below a return threshold for some time. With the value missing, the exhaust phaser on this bank will usually be kept in a safe position, so the warning lamp is often the only sign. No manufacturer publication covers P34BB, and NTN-SNR simply calls it too high a signal on the outlet side, second bank. High fault on bank 1: P34B7; low on bank 2: P34BA.
- What you may notice
- Malfunction indicator lamp lit
- Bank 2 exhaust cam held in a safe position
- Likely causes
- LikelySignal line broken or sensor ground loose
- PossibleSignal line touching a supply wire
- RareSensor open inside the bank 2 actuator
- 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 – €850
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.