What does code P2B7C mean?

Q: What does code P2B7C mean?

EVAP System Pressure Sensor/Switch C Circuit Low. P2B7C means the powertrain control module has detected a low-voltage condition on the electrical circuit for the evaporative emission system's pressure sensor or switch, specifically the 'C' circuit. The computer expects a voltage signal within a normal range from this sensor, but the return voltage is lower than the programmed threshold, indicating a short to ground, an open circuit, or a faulty sensor.

DTC codes / P2Bxx · Hybrid propulsion / P2B7C

P2B7CEVAP System Pressure Sensor/Switch C Circuit Low

P2B7C means the powertrain control module has detected a low-voltage condition on the electrical circuit for the evaporative emission system's pressure sensor or switch, specifically the 'C' circuit. The computer expects a voltage signal within a normal range from this sensor, but the return voltage is lower than the programmed threshold, indicating a short to ground, an open circuit, or a faulty sensor.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.