DTC P0152 Acura
HO2S-21 (Bank 2 Sensor 1) Circuit High Input
HO2S-21 (Bank 2 Sensor 1) Circuit High Input
Description
Engine started, vehicle driven in closed loop in D4 D5 position at cruise speed, and the PCM detected the HO2S signal was fixed at more than 0.90v. Note: The actual value where the code sets is in the PCM memory.
Cause and Solution
HO2S signal tracking (wet oily) in connector causing a short between the signal circuit and heater power circuit
HO2S signal circuit is open, or the ground circuit is open
HO2S heater supply circuit is open
Video Guide
Diagnostic Info
- DTC Code: P0152
- Brand: Acura