DTC P0134: Ho2S No. 1 Circuit, No Activity Detected: Condition
WARNING: This page is about a different car, the 2002 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
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.