P2B3CB Camshaft Profile Actuator B Control Circuit/Open 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
- This code reports an interrupted control circuit at actuator B on the exhaust camshaft (camshaft B) of bank 2. No vehicle manufacturer is known to use P2B3C in public documents. Its bank 1 twin P2B39 appears in GM's tables for the 2.7-litre L3B, an inline engine without a second bank, where an impedance of 200 kΩ or more with the output on counts as open. Audi's later 2.0 TFSI applies its valvelift system to the exhaust valves, which shows that exhaust lobe switching is in production, but that engine also has a single bank. CARB's requirement for circuit monitoring of output components is the basis. An unplugged connector, a broken lead or an open solenoid coil will stop the exhaust sleeve on bank 2 from moving.
- What you may notice
- Check engine light on
- Exhaust lift on bank 2 no longer switches
- Likely causes
- LikelyConnector of the bank 2 exhaust actuator unplugged or loose
- PossibleBroken lead to the actuator
- PossibleOpen coil in exhaust actuator B
- 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 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.