OBD-II code · Powertrain (generic, extended)
P2A0E Manifold Absolute Pressure Sensor B Circuit Intermittent/Erratic
The MAP B signal drops out or jumps intermittently. Loose connector or noisy ground reference. 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 P2A0E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Map Sensor B, Wiring Harness, Ecm
Related codes
- P2A0BManifold Absolute Pressure Sensor B Circuit Range/Performance
- P2A0CManifold Absolute Pressure Sensor B Circuit Low
- P2A0DManifold Absolute Pressure Sensor B Circuit High
- P2A0FFuel Supply Heater Performance
- P2A10O2 Sensor Negative Voltage Bank 2 Sensor 2
- P2A11O2 Sensor Negative Voltage Bank 2 Sensor 3
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.