Throttle/Pedal Position Sensor/Switch B Circuit Low Input
Common Symptoms
- Check Engine Light illuminated
- Reduced engine power or limp mode activated
- Poor throttle response or hesitation during acceleration
- Engine may not rev beyond a certain RPM
- Idle may be rough or unstable
- Transmission may not shift properly
Most Likely Root Causes
- Faulty throttle position sensor
- Damaged or corroded wiring harness to throttle body
- Poor ground connection at throttle position sensor
- Failed accelerator pedal position sensor
- Water or contamination in throttle body electrical connector
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Component Location
The throttle position sensor is mounted on the throttle body assembly, typically located on the intake manifold near the engine air intake.
Manufacturer Notes
Some electronic throttle control systems use redundant sensors and this code indicates the secondary sensor circuit has fallen below expected operating range.
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