I have P2238 error coming up and I need it repaired.
Hi there. This P2238 code is set when the engine computer detects a short circuit on the heater for the 02 or AF sensor.The short is generally in the sensor itself and replacement corrects the condition. However, there could be a short in the wire harness or inside the engine computer.
A digital volt/ohm meter can be used to check the heater resistance of bank 1 sensor 1 02/AF sensor. If it is lower then specified, then replace the sensor. Further inspection may be needed if the wire harness or engine computer are at fault.
Have a car question? Get free advice from our top-rated mechanics.