P2A0EManifold Absolute Pressure Sensor B Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Matters for the ITP
- How the car detects it
- P2A0E flags a MAP B signal that jumps or drops out for short moments instead of failing for good. No manufacturer documents P2A0E publicly; GM's LT6 tables, the only public description of a sensor B, cover just its low, high and plausibility faults. The logic therefore follows the intermittent code of sensor A, P0109: Ford's 2012 summary sets it without MIL when the voltage briefly falls below 0.024 V or rises above 4.96 V, judged over 2 s, and another Ford strategy counts ten excursions beyond the limits in one drive cycle. Loose terminals, a chafed harness or moisture in the connector are the usual culprits, and the fault often comes and goes with vibration or temperature. The engine may stumble or hesitate during the dropouts.
- What you may notice
- Intermittent stumble or hesitation
- Fault comes and goes, warning light depending on manufacturer
- Likely causes
- LikelyLoose or widened terminal in the sensor B connector
- PossibleHarness chafing on engine parts, intermittent short or open
- PossibleMoisture or corrosion in the connector
- Inspection (ITP)
- Can matter for the ITP: it concerns the emissions system.
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.