DTC P0038 Cadillac
HO2S-12 (Bank 1 Sensor 2) Heater Low Side Short To B+
HO2S-12 (Bank 1 Sensor 2) Heater Low Side Short To B+
Description
Engine started and the PCM detected that the HO2S-12 heater low control circuit signal was more than 4.6v with the heater commanded off, indicating the HO2S heater low side circuit is shorted to power.
Cause and Solution
HO2S heater low side control circuit is shorted to system power
HO2S heater is damaged or it has failed
Video Guide
Diagnostic Info
- DTC Code: P0038
- Brand: Cadillac