P1178 – Swirl Control Valve Position Sensor Low Input (Nissan)
Description
The ECM detected a low input signal from the swirl valve position sensor.
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A diagnostic scanner with live data, freeze-frame information and the right system access can help you investigate the actual cause before replacing parts.
Compare Diagnostic ScannersSymptoms
- Rough idle
- Poor acceleration
- Hesitation
- Check engine light
Causes
- Open circuit
- Faulty sensor
- Connector corrosion
- Wiring damage
Diagnosis
- Check wiring continuity
- Inspect sensor
- Check connectors
- Scan live data
Repair
- Repair wiring
- Replace sensor
- Clean connectors