OBD-II code · Powertrain (generic, extended)
P2A0D Manifold Absolute Pressure Sensor B Circuit High
Voltage on the MAP B signal line is above the expected window. Wire shorted to B+ or sensor open. 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 P2A0D?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen MAP B sensor
- Less likelyConnector pins corroded - high contact resistance
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
- P2A0AManifold Absolute Pressure Sensor B Circuit
- P2A0BManifold Absolute Pressure Sensor B Circuit Range/Performance
- P2A0CManifold Absolute Pressure Sensor B Circuit Low
- P2A0EManifold Absolute Pressure Sensor B Circuit Intermittent/Erratic
- P2A0FFuel Supply Heater Performance
- P2A10O2 Sensor Negative Voltage Bank 2 Sensor 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.