Cadillac P1171: Fuel System Lean During Acceleration
Is your scanner showing Cadillac P1171?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1171: Fuel System Lean During Acceleration
OVERVIEWWhat Does The Cadillac P1171 Code Mean?
Engine started, engine runtime over 20 seconds in closed loop, ECT sensor more than 70ºF, Decel Fuel Cutoff inactive, Power Enrichment mode enabled, and the PCM detected the HO2S was lean for 3 seconds.
What Are The Potential Causes Of The Cadillac P1171 Code?
Below are some potential causes of this DTC:
- Fuel filter clogged or restricted
- Fuel injectors dirty or restricted
- Fuel level too low during heavy acceleration events
- Fuel pressure regulator has failed (not supplying enough fuel)
- Water or alcohol in fuel (low HO2S signal during acceleration)
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> iFJF TP1015 Fuel Filter 5 Micron Replacement
>>> JDMON Compatible with Fuel Injectors
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
