P1771
Throttle Position Sensor Open Circuit
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Unstable engine idling
- Dips when pressing the gas pedal
- Check Engine Light Illuminates
- Reduced engine power
- Increased fuel consumption
Causes
- Broken wires in the sensor circuit
- Oxidation of contacts in the TPS connector
- Malfunction of the throttle position sensor itself
- Wiring harness damage
- Problems with the engine control unit (rare)
How to Fix
- Check the integrity of the wiring to the sensor
- Clean the contacts in the TPS connector
- Check sensor resistance
- Replace the throttle position sensor if necessary
- Test work after repair