Throttle/Pedal Position Sensor/Switch A Circuit High Input
Common Symptoms
- Check engine light illuminated
- Engine RPM surges or hunting at idle
- Poor acceleration or sluggish throttle response
- Engine may enter limp mode with reduced power
- High idle speed or throttle sticking at high position
- Transmission shifting issues or harsh shifts
Most Likely Root Causes
- Faulty throttle position sensor
- Damaged or corroded wiring harness to TPS
- Short to voltage in TPS signal circuit
- Poor electrical connection at TPS connector
- Failed accelerator pedal position sensor
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Component Location
Throttle position sensor is mounted on the throttle body assembly, typically on the throttle shaft opposite the throttle cable or actuator motor.
Manufacturer Notes
Many vehicles with electronic throttle control use redundant TPS circuits, and this code indicates the primary signal circuit voltage is abnormally high.
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