P1134 – O2 Sensor Intermittent Response
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Symptoms
- Rough idle
- Hesitation
- Poor acceleration
- High fuel trims
- Check engine light
Causes
- Faulty O2 sensor
- Loose connector
- Wiring issue
- Exhaust leak
- ECU issue
Diagnosis
- Inspect O2 wiring
- Check connectors
- Inspect exhaust leaks
- Scan live data
- Test sensor response
Repair
- Replace O2 sensor
- Fix connectors
- Repair wiring
- Fix exhaust leaks
- Update ECU