P2231
Barometric Pressure Circuit High
The barometric pressure sensor reports a voltage above the upper limit. The signal cannot represent any realistic atmospheric pressure, indicating an open circuit or short to supply voltage.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Signal shorted to supply voltageCommon
- Open in signal or ground wirePossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Barometric Pressure Sensor
- Bps Wiring
P2231 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.