P34B9B Camshaft Position Actuator Temperature Sensor Range/Performance Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- With P34B9 the bank 2 exhaust actuator reports a temperature that is electrically valid but does not make sense. A two-bank engine offers an obvious yardstick: after a long cold soak both exhaust actuators should read almost the same, and under equal load they should warm alike. Whether any carmaker applies such logic to P34B9 is not published; the code appears only in lists such as the one from NTN-SNR. CARB requires VVT input components to be checked for rationality where feasible, not just for open and shorted circuits. A drifting sensor, a contact resistance that shifts the reading or outdated module software are the plausible causes. In Aisin's design a false hot value would cut motor current needlessly. Bank 1: P34B5.
- What you may notice
- Malfunction indicator lamp lit
- Usually no change in driveability
- Likely causes
- PossibleBank 2 actuator temperature sensor drifting
- PossibleContact resistance at the plug shifting the value
- RareModule software outdated
- 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: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.