Potential causes of the P2120 code include: If you have access to a scan tool, with KOEO (Key on engine off) observe the TPS voltage. With throttle closed, voltage should be about .45 volts. It should gradually sweep upwards to approximately 4.5 to 5 volts as you depress the throttle.

The P2120 code indicates a problem with the Throttle/Pedal Position Sensor/Switch 'D' Circuit in the vehicle. This sensor is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM).

What are the possible causes of the P2120 fault code? If your engine light is on and you’re seeing the P2120 fault code, it could be due to a faulty Accelerator Pedal Position (APP) Sensor, an open or shorted APP Sensor harness, a poor electrical connection in the APP Sensor circuit, or a faulty Powertrain Control Module (PCM).

P2120 is an OBD-II generic code for the engine control module (ECM) detecting a major failure in the throttle pedal position sensor circuit of a below or above specified voltage return from the sensor.

2020年6月14日 · The APP sensor 1 sends a signal from the sensor to the ECM indicating the accelerator pedal position. The ECM actuates the throttle plates based on this information. If the ECM detects that the APP sensors are not within a predicted value from each other, DTC P2120 sets. P2120 Chevrolet Code - Accelerator Pedal Position Sensor 1 Circuit

OBD-II Code P2120 is defined as a Throttle/Pedal Position Sensor/Switch 'D' Circuit. It means that the PCM detects the Accelerator Pedal Position Sensor is not changing appropriately when the...

2020年8月12日 · OBD II fault code P2120 is a generic trouble code that is defined as “Throttle/Pedal Position Sensor/Switch “D” Circuit”, and is set when the PCM (Powertrain Control Module) detects an abnormally high or low voltage in …

2024年12月19日 · The P2120 code stands for “Throttle Position Sensor/Switch C Circuit Malfunction.” It’s set by the PCM when it detects a voltage outside the normal operating range. Some of the common causes of the code include a sticking throttle return spring, MAP or TPS connector issues, and a misrouted harness.

P1125, P2120 and P2125. Replaces throttle position sensor and just tried a new pedal position sensor. Still getting codes and still won't start. Mechanic's Assistant: Does the vehicle hesitate during acceleration? Or maybe speed up suddenly when you aren't even hitting the gas? Customer: Won't even start.

P2123, P2120, P2127, P2128, P2125, or P2138) are set that could be related to the Accelerator Pedal Position APP sensor, refer to the specific diagnostics for those DTC’s in SI, along with the following service bulletins for reference: