DTC P0031 Audi
HO2S Heater Control Circuit Low (Bank 1, Sensor 1) Short to ground
HO2S Heater Control Circuit Low (Bank 1, Sensor 1) Short to ground
Description
Time after engine start, >5 Sec heater commanded off
Cause and Solution
HO2S is contaminated (due to presence of silicone in fuel)
HO2S signal and ground circuit wires crossed in wiring harness
HO2S signal circuit is shorted to sensor or chassis ground
HO2S element has failed (internal short condition)
Video Guide
Diagnostic Info
- DTC Code: P0031
- Brand: Audi