VIDEO

Acura DTC

Acura DTC P0131

Manufacture

Acura DTC

Code

P0131

Definition

HO2S-11 (Bank 1 Sensor 1) Circuit Low Input

Description

Engine running started, vehicle driven in 4th gear at cruise speed, and then back to idle speed, and the PCM detected the HO2S signal was fixed at less than 0.50v.

Cause

  • HO2S signal circuit is open or it is shorted to groundHO2S may be contaminated or may have failedFuel supply system is too lean (fuel filter is clogged or dirty)PCM has failed

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