DTC codes / P22xx · Fuel and air metering (injector circuits) / P2236
P2236 means the engine computer has detected an electrical short between the signal wire and the heater wire inside the Bank 2 Sensor 3 oxygen sensor circuit. The computer monitors the sensor's signal voltage and heater current, and it flags this code when the two circuits show continuity or voltage patterns that should never occur together.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.