P0030 OBD II Trouble Code HO2S Heater Control Circuit (Bank 1 Sensor 1)

Detailed information on troubleshooting and repairing a P0030 DTC code which refers to a problem in the HO2S heater control circuit. Also includes links to relevant forum topics on the code.

Symptoms of P0030 OBD II Trouble Code

Common Causes of P0030 OBD II Trouble Code

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