Powertrain
Definition only
Lights the check engine lamp
P2A0A: Manifold Absolute Pressure Sensor B Circuit
Standardized SAE J2012 code · P2Axx codes
What does P2A0A mean?
The ECM detects a generic fault on the secondary manifold absolute pressure sensor (MAP B). Air load estimation cannot be cross-checked.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High MAP B sensor failed
- Medium Wiring or connector fault
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2A0A on the same make and model first.
P2A0A in the community
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