DTC P0151 Acura
HO2S-21 (Bank 2 Sensor 1) Circuit Low Input
HO2S-21 (Bank 2 Sensor 1) Circuit Low Input
Description
Engine started, engine running in closed loop at cruise speed in D4 D5 position, and the PCM detected the HO2S signal was fixed at less than 0.10v during the CCM test. Note: The actual value where the code sets is in the PCM memory.
Cause and Solution
HO2S signal circuit is open
HO2S signal circuit is shorted to ground
HO2S ground circuit is open
HO2S may be contaminated or may have failed
Video Guide
Diagnostic Info
- DTC Code: P0151
- Brand: Acura