DTC P0134: Ho2S No. 1 Circuit, No Activity Detected: Condition
DTC is set when Power Control Module (PCM) detects HO2S No. 1 voltage input is .45 volts or lower. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- HO2S No. 1 malfunction.
- Fuel system malfunction.
- PCM malfunction.