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DTC codes / P22xx · Fuel and air metering (injector circuits) / P2253

P2253O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 1)

P2253 indicates that the engine control module (ECM) has detected an abnormally high current on the negative control circuit of the upstream oxygen sensor on bank 1. The sensor's heater or signal return circuit is drawing more current than expected, which can affect sensor accuracy and emissions.

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.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage