Cadillac P1154: HO2S-21 (Bank 2 Sensor 1) Transition Time Ratio
Is your scanner showing Cadillac P1154?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1154: HO2S-21 (Bank 2 Sensor 1) Transition Time Ratio
OVERVIEWWhat Does The Cadillac P1154 Code Mean?
Engine speed from 1200-2800 rpm
What Are The Potential Causes Of The Cadillac P1154 Code?
- Air leaks present in the exhaust manifold or the exhaust pipes
- HO2S may be contaminated (due to improper fuel or silicone)
- HO2S signal low reference circuit has high resistance
- HO2S heater element has failed, or the heater circuit is open
- 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
>>> GM Genuine Parts 12617944 Exhaust Manifold Gasket
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
