Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
Common Symptoms
- Check Engine Light illuminated
- Intermittent loss of throttle response or hesitation
- Sudden engine stalling during acceleration
- Erratic idle speed or surging
- Limp mode activation with reduced power
- Cruise control may not engage or drops out unexpectedly
Most Likely Root Causes
- Damaged or corroded wiring harness at throttle position sensor connector
- Worn or failing throttle position sensor
- Intermittent connector contact due to corrosion or loose pins
- Throttle body carbon buildup affecting sensor operation
- Poor ground connection at sensor or ECM
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Component Location
The throttle position sensor is typically mounted on the side of the throttle body assembly in the intake system.
Manufacturer Notes
Some manufacturers have specific relearn procedures required after throttle body cleaning or sensor replacement to prevent false intermittent codes.
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