P1167 – HO2S2 Heater Control Range/Performance (Nissan)
Description
The ECM detected an O2 sensor heater signal outside the expected range.
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Compare Diagnostic ScannersSymptoms
- Poor fuel economy
- Slow closed-loop operation
- Check engine light
Causes
- Faulty O2 sensor
- Wiring issues
- Connector corrosion
- ECM signal error
Diagnosis
- Test sensor output
- Inspect wiring
- Check connectors
- Scan live data
Repair
- Replace O2 sensor
- Repair wiring
- Clean connectors