P2C36Crankcase Pressure Sensor B Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2C36 covers a crankcase pressure sensor B signal that drops out briefly or jumps faster than real crankcase pressure can change, while staying mostly inside its electrical range. That pattern points to a contact that opens for moments, a wire chafing on the engine, moisture in the plug or a sensor failing internally. No manufacturer documents P2C36 publicly: Maserati's bulletin on the blow-by sensor lists only P2C33–P2C35 for sensor B, and Ford's gasoline summary has no erratic code for its sensor A either, whose counterpart would be P051E. The description therefore rests on CARB, which requires inputs used by monitors to be checked for circuit faults and plausibility. A shake test of the harness while watching live data is the usual way to find the cause.
- What you may notice
- MIL that may come and go
- Erratic crankcase pressure value in live data
- Usually no driveability change
- Likely causes
- LikelyLoose or fretting contacts at the sensor or an intermediate connector
- PossibleWire rubbing on engine parts and shorting briefly
- PossibleMoisture or oil in the connector
- RareSensor with intermittent internal fault
- 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 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.