DTC codes / P2Bxx · Hybrid propulsion / P2B7E
P2B7E indicates that the powertrain control module (PCM) has detected an intermittent fault in the electrical circuit for the evaporative emission (EVAP) system pressure sensor or switch, specifically on the 'C' circuit. The PCM monitors the sensor signal for expected voltage or pressure changes and flags this code when the signal momentarily drops out, spikes, or becomes erratic without setting a hard failure.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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