Code result
P0030
HO2S Heater Control Circuit
Moderate severity
What it means
HO2S Heater Control Circuit (Bank 1 Sensor 1): the control circuit has an electrical fault. The heater brings the oxygen sensor to operating temperature for closed-loop fuel control.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Heater element open or burnt out
highOne of the most commonly reported causes for this code — check this first.
Heater supply fuse blown
mediumA plausible cause — test and verify before replacing parts.
Wiring or connector fault
mediumA plausible cause — test and verify before replacing parts.
Related help
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