P2B3DB Camshaft Profile Actuator B Control Circuit Low 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
- P2B3D: the control wire of the second exhaust-side profile actuator on bank 2 (camshaft B, actuator B) has contact with ground. Publicly documented use by a manufacturer is not known. For comparison, GM's L3B diagnostics define the bank 1 code P2B3A as a ground short of at most 0.5 Ω with the driver on and four failed tests out of five. Because 13 CCR 1968.2 requires engine control outputs to be monitored for such faults, a V engine with exhaust lobe switching on both banks would need this code. Look for chafing at brackets and valve cover edges or for a shorted coil. The exhaust valves on bank 2 then keep their current lift profile, and any function that relies on switching there is unavailable.
- What you may notice
- Check engine light on
- Bank 2 exhaust stays on one lift profile
- Likely causes
- LikelyWire chafed at a bracket or valve cover edge on bank 2
- PossibleShorted coil in exhaust actuator B
- RareOil or water in the connector
- 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.