DTC P1171 Acura
Fuel System Lean During Acceleration Detected
Fuel System Lean During Acceleration Detected
Description
DTC P0131, P0132, P0133, P0134 and P1133 not set, ECT sensor more than 140ºF, engine running in Power Enrichment mode in closed loop, and the PCM detected the HO2S-11 signal indicated less than 400 mv for 5 seconds during the Fuel System Monitor test.
Cause and Solution
Air intake leaks in the engine, or in the PCV system (valve)
Air leaks at the EGR gasket, or at the EGR valve diaphragm
Base engine mechanical fault affecting one or more cylinders
Video Guide
Diagnostic Info
- DTC Code: P1171
- Brand: Acura