OBD-II code · Powertrain (generic, extended)
P236A Cylinder 12 Pressure Sensor Circuit Intermittent or Erratic
Cylinder 12 pressure sensor signal jumps or drops out intermittently — connector or wiring issue. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P236A?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyIntermittent contact at connector
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–5 h
- Emissions test
- Likely to fail
- Parts involved
- Cylinder Pressure Sensor 12
Related codes
- P234CCylinder 9 Pressure Sensor Circuit Intermittent or Erratic
- P2356Cylinder 10 Pressure Sensor Circuit Intermittent or Erratic
- P2360Cylinder 11 Pressure Sensor Circuit Intermittent or Erratic
- P2367Cylinder 12 Pressure Sensor Circuit Range/Performance
- P2368Cylinder 12 Pressure Sensor Circuit Low
- P2369Cylinder 12 Pressure Sensor Circuit High
- P236BCylinder 12 Pressure Too Low
- P236CCylinder 12 Pressure Too High
- P236DCylinder 12 Pressure Variation Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.