DTC P0131 Acura
HO2S-11 (Bank 1 Sensor 1) Circuit Low Input
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 and Solution
HO2S signal circuit is open or it is shorted to ground
HO2S may be contaminated or may have failed
Fuel supply system is too lean (fuel filter is clogged or dirty)
Video Guide
Diagnostic Info
- DTC Code: P0131
- Brand: Acura