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I have replaced the bank 1 O2 sensor and after 2 days check engine light on again and showed these three code.

Vehicle: hyundai gez 1.1 2003

1 Answer

P0031 -02 sensor heater heater circuit low bank1 sensor 2

P0030 -02 heater control circuit malfunction

P0132 Oxygen sensor circuit high voltage (bank 1 sensor 1)

P0132 is for bank 1 sensor 1 which is the engine management sensor when it a high voltage recheck the harness for porper connection and also the wiring harness a definition of circuit high mean it is not connected, Recheck the connection and make sure the 02 is properly torque or tighten a loose installation can also set these codes.
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