The P0221 trouble code indicates a range or performance issue with the throttle pedal position sensor switch B circuit. This code typically points to problems related to the sensor or switch responsible for monitoring the position of the throttle pedal, which is crucial for determining engine acceleration and performance.
Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance
Code symptoms P0221.
1. Engine hesitation or stalling.
2. Reduced engine power or lack of response to the throttle.
3. Illumination of the Check Engine Light.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0221.
1. Malfunctioning throttle position sensor or switch.
2. Wiring or connector issues within the throttle position sensor circuit.
3. Problems with the Engine Control Module (ECM) affecting sensor readings.
Code Solutions P0221.
1. Inspect and replace the throttle position sensor or switch if it is malfunctioning.
2. Check and repair any issues with the wiring or connectors in the throttle position sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.