System Inspection

Engine Control
P0139 O2 Sensor Circuit Slow Response(Bank 1 / Sensor 2) - Inspection/Repair:_:System Inspection

Exhaust System Inspection

1. Check the exhaust system for an exhaust leak near the engine.
2. Was an exhaust leak found?






Air Leakage Inspection

1. Visually/physically inspect the following items:
- Vacuum hoses for splits, kinks and improper connections.
- Exhaust system between HO2S and Three way catalyst for air leakage
- EVAP system for leakage
- PCV hose for proper installation
2. Was a problem found in any of the above areas?






Visual/Physical Inspection

1. Visually/physically inspect the following items:
- Check for corrosion on terminals
- Check for terminal tension ( at the HO2S and at the PCM)
- Check for damaged wiring
- Check the HO2S ground circuit for a good connection
- Check front and rear HO2S for connections being reversed
2. Was a problem found in any of the above areas?