Cadillac P1140: HO2S-12 (Bank 1 Sensor 2) Transition Time Ratio
Is your scanner showing Cadillac P1140?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1140: HO2S-12 (Bank 1 Sensor 2) Transition Time Ratio
OVERVIEWWhat Does The Cadillac P1140 Code Mean?
Engine started; test not completed this key cycle, Engine Metal Over Temperature “off”, and the PCM detected the HO2S-12 RL/LR transition.
What Are The Potential Causes Of The Cadillac P1140 Code?
- Fuel pressure is too high (i.e., causing a rich air fuel mixture)
- HO2S may be contaminated (due to improper fuel or silicone)
- HO2S signal high or low reference circuit has high resistance
- 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:
>>> A-Premium O2 Oxygen Sensor Upstream Downstream Replacement
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> GM Genuine Parts 12633238 Engine Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
