DTC P2231: O2 Sensor Signal Circuit Shorted To Heater Circuit (Bank 1 Sensor 1): DTC Detecting Condition
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- DTC Description, the ECM compares front HO2S signal with model signal. This comparison will determine loss of insulation resistance between heater circuit and sensor circuit of front HO2S. The ECM sets DTC P2231 if the difference between HO2S signal and model signal is bigger than the predetermined threshold. If the same error code is set in the next driving cycle, the ECM illuminates the MIL.
- Conditions for Setting the DTC