P2128 code indicates a high voltage signal from the throttle or pedal position sensor or switch “E” circuit.
P2128 Throttle/Pedal Position Sensor/Switch “E” Circuit High
Code symptoms P2128.
1. Engine stalling or surging
2. Sudden loss of power while driving
3. Unresponsive throttle pedal
4. Check engine light illuminated
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2128.
1. Faulty throttle position sensor
2. Wiring harness issues such as a short circuit or open circuit
3. Corrosion or poor connections in the throttle or pedal position sensor circuit
4. Electronic control module (ECM) malfunction
5. Throttle body issues such as a stuck throttle plate
Code Solutions P2128.
1. Check the throttle position sensor (TPS) wiring harness for any loose or damaged connections. Ensure that the wiring is securely attached.
2. Inspect the throttle position sensor for any signs of wear or damage. If the sensor is faulty, replace it with a new one.
3. Clear the error code with an OBD-II scanner, drive the vehicle, and monitor the sensor readings to see if the issue persists.
4. Verify that the throttle pedal is functioning properly and is not sticking or causing any interference with the sensor’s operation.
5. If the issue persists, consider seeking professional help to diagnose and repair any underlying electrical or mechanical issues causing the high circuit reading.