Engine Error
P0123
Throttle/Pedal Position Sensor/Switch A Circuit High Input
Severity
Medium
Symptoms
High idle speed, erratic throttle response, check engine light
Common Causes
- Short to voltage in TPS wiring
- Faulty Throttle Position Sensor
- Loose sensor mounting screws
- Failed PCM
How to Fix
- 1 Test TPS circuit for shorts
- 2 Replace TPS sensor
- 3 Tighten and calibrate sensor position
- 4 Test PCM reference voltage
Estimated Repair Cost
USD
$80
–
$250
TPS replacement: $80 - $200