OBD-II code · Powertrain (generic, extended)
P2A0A Manifold Absolute Pressure Sensor B Circuit
The ECM detects a generic fault on the secondary manifold absolute pressure sensor (MAP B). Air load estimation cannot be cross-checked.
Is it safe to drive with P2A0A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyMAP B sensor failed
- PossibleWiring or connector fault
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
- P2A07O2 Sensor Circuit Range/Performance Bank 2 Sensor 4
- P2A08O2 Sensor Negative Voltage Bank 1 Sensor 3
- P2A09O2 Sensor Negative Voltage Bank 2 Sensor 1
- P2A0BManifold Absolute Pressure Sensor B Circuit Range/Performance
- P2A0CManifold Absolute Pressure Sensor B Circuit Low
- P2A0DManifold Absolute Pressure Sensor B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.