DTC P0157 Or DTC P0158: Condition
WARNING: This page is about a different car, the 2002 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0157 is set when ECM (PCM) detects maximum HO2S B2 S2 voltage input is more than 0.5 volt for 4 seconds when fuel is cut. DTC P0158 is set when ECM (PCM) detects maximum HO2S B2 S2 voltage input is less than 0.35 volt , or more than 2 volts for 20 seconds. MIL is illuminated when ECM (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:
- HO2S Bank 2, Sensor 2 malfunction.
- HO2S Bank 2, Sensor 2 circuit malfunction.
- Fuel injector malfunction.
- Fuel pressure control system malfunction.
- ECM (PCM) malfunction.
- Low fuel level.