P1122 Throttle Position Sensor Circuit Intermittent Low Voltage
What does P1122 mean on a Ford?
P1122 — Throttle Position Sensor Circuit Intermittent Low Voltage. This Ford-enhanced code applies to F-150, Ranger, Explorer, Mustang.
Common causes of P1122
- Loose TPS connector dropping the signal
- Chafed signal wire grounding intermittently
- Worn sensor wiper losing contact at spots
- Corroded terminals
- Failing sensor
How to fix P1122
- Wiggle-test the TPS harness during a voltage sweep
- Graph the sweep and mark dropout points
- Inspect terminals and wiring routing
- Check sensor mounting tightness
- Replace the sensor if dropouts repeat