Throttle/Pedal Position Sensor/Switch B Circuit High Input
Common Symptoms
- Check Engine Light illuminated
- Engine stuck at high idle or no throttle response
- Reduced engine power or limp mode activated
- Poor acceleration or surging
- Difficulty starting or stalling
Most Likely Root Causes
- Failed throttle position sensor
- Damaged or corroded wiring harness at throttle body
- Shorted signal wire to voltage source
- Failed accelerator pedal position sensor
- ECM internal fault
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Component Location
The throttle position sensor is mounted on the throttle body assembly, typically on the side of the throttle body housing.
Manufacturer Notes
Some vehicles may require throttle body relearn or adaptation procedure after sensor replacement or reconnection of battery power.
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