P1143 – Swirl Control Valve Vacuum Cut Valve (Nissan)
Description
The ECM detected improper operation of the swirl control valve vacuum cut valve.
Need More Than Just the Fault Code?
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
- Reduced power
- Check engine light
Causes
- Faulty vacuum cut valve
- Vacuum leak
- Stuck swirl flaps
- Wiring issues
Diagnosis
- Inspect vacuum lines
- Test valve operation
- Check wiring
- Scan live data
Repair
- Replace vacuum cut valve
- Repair wiring
- Fix vacuum leaks
- Clean swirl flaps
