P1511
Throttle Control System Backup System Performance
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)
Symptoms
- Unstable engine idling
- Reduced engine power
- Check Engine Light Illuminates
- Dips when pressing the gas pedal
- Activating emergency engine operation
Causes
- Throttle Position Sensor Malfunction
- Problems with the throttle body wiring
- Mechanical damage to the throttle valve
- Throttle assembly contamination
- Software error in the engine control unit
How to Fix
- Check the condition of the throttle body and clean if necessary
- Check the integrity of the wiring harness to the throttle valve
- Check the operation of the throttle position sensor
- Carry out throttle valve adaptation using diagnostic equipment
- If necessary, replace the throttle assembly