What does code P22BE mean?

Q: What does code P22BE mean?

O2 Sensor Reference Voltage Circuit High (Bank 2 Sensor 2). P22BE indicates that the powertrain control module (PCM) has detected a voltage on the oxygen sensor reference circuit for bank 2 sensor 2 that is higher than the expected range. This reference voltage is a low-current signal the PCM uses to monitor the downstream oxygen sensor's operation, and an abnormally high reading tells the computer that the circuit is likely shorted to voltage or the sensor's internal electronics have failed.

DTC codes / P22xx · Fuel and air metering (injector circuits) / P22BE

P22BEO2 Sensor Reference Voltage Circuit High (Bank 2 Sensor 2)

P22BE indicates that the powertrain control module (PCM) has detected a voltage on the oxygen sensor reference circuit for bank 2 sensor 2 that is higher than the expected range. This reference voltage is a low-current signal the PCM uses to monitor the downstream oxygen sensor's operation, and an abnormally high reading tells the computer that the circuit is likely shorted to voltage or the sensor's internal electronics have failed.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

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