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P0030 Diagnostic Trouble Code Discussion for October 2008

Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0030
Help Request Posted
2000 Saturn LW1 2.2L No Start, MIL Lamp on VIN: 1G8JU82F3Y
P0030: h02s heater control circuit bank 1 sensor 1. I replaced both coils and all the plugs put everything back together and started the vehicle, the check engine light remained and the engine was visibly misfiring so I rescanned to confirm. There now was a multiple misfire in bank 1 3 5 no longer isolated in c...
October 16, 2008