P1125high severityPowertrain
Tandem Throttle Position Sensor Circuit
on 2021 Nissan Leaf Electric 40kWh · FWD
What this code means
Fault in the dual/tandem TPS providing redundant position data.
Symptoms
- CEL
- Reduced power
- Erratic throttle
- Idle only
- Limp mode
Common causes
- Faulty tandem TPS
- Damaged wiring
- Corroded pins
- Throttle body failure
Diagnostic steps
- Test both TPS signals
- Inspect wiring
- Check connector
- Test throttle body
Repair notes
Replace throttle body assembly.
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