O2 Sensor Heater Control Circuit (Bank 1 Sensor 1)
Emission · Oxygen Sensors
The heater circuit in the upstream oxygen sensor on Bank 1 has failed. The heater brings the sensor to operating temperature quickly after cold start. Without it, the engine runs in open loop longer, burning more fuel.
- Failed O2 sensor heater elementMost common
- Blown fuse for O2 sensor heaterCommon
- Wiring harness damageCommon
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Frequently asked questions
What does P0030 mean?
The heater circuit in the upstream oxygen sensor on Bank 1 has failed. The heater brings the sensor to operating temperature quickly after cold start. Without it, the engine runs in open loop longer, burning more fuel.
Is P0030 serious?
Safe to drive — affects fuel economy and emissions.
How much does it cost to fix P0030?
Repair costs for P0030 range from $150 – $350 depending on the root cause and your vehicle.
Can I drive with P0030?
You can drive short distances but should have it repaired within 1-2 weeks to prevent further damage.