P1121 – Throttle Position Sensor Range/Performance (Nissan)
Description
The ECM detected a TPS signal outside the expected range.
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Compare Diagnostic ScannersSymptoms
- Poor acceleration
- Hesitation
- Rough idle
- High idle
- Check engine light
Causes
- Faulty TPS sensor
- Throttle body wear
- Wiring issues
- ECM signal error
Diagnosis
- Test TPS output
- Inspect wiring
- Check throttle body
- Scan live data
Repair
- Replace TPS sensor
- Repair wiring
- Service throttle body