VIDEO

Acura DTC

Acura DTC P1171

Manufacture

Acura DTC

Code

P1171

Definition

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

  • Air intake leaks in the engine, or in the PCV system (valve)Air leaks at the EGR gasket, or at the EGR valve diaphragmBase engine mechanical fault affecting one or more cylindersExhaust leaks before or near where the front HO2S is mounted

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