DTC P0134: Right Front Ho2S, No Activity Detected, DTC P0140: Middle Ho2S, No Activity Detected Or DTC P0154: Left Front Ho2S, No Activity Detected: Condition
DTC is set when oxygen sensor signal voltage does not exceed .55 volt for 80 seconds after engine has reached normal operating temperature and engine speed is more than 1500 RPM. Possible causes are:
- Oxygen sensor.
- Exhaust system leak.
- Engine compression.
- Open or short circuit.
- Engine malfunction.