Cadillac P1031: HO2S Heater Current Monitor Control (Bank 1 Sensor 1)
Is your scanner showing Cadillac P1031?
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Cadillac P1031: HO2S Heater Current Monitor Control (Bank 1 Sensor 1)
OVERVIEWWhat Does The Cadillac P1031 Code Mean?
Key on or engine running; system voltage over 10.0v, and the PCM detected an unexpected voltage condition on the HO2S-11 Heater Current Monitor Driver circuit. The HO2S heater is a device used to reduce the time the sensor takes to go active.
What Are The Potential Causes Of The Cadillac P1031 Code?
- HO2S heater current monitor low or high circuit is open
- HO2S heater current monitor low or high circuit shorted to B+
- HO2S heater is damaged or has failed
- PCM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> GM Genuine Parts 12633238 Engine Control Module
>>> A-Premium O2 Oxygen Sensor Upstream Downstream Replacement
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac P1031, DTCDECODE.
