P0120 GMC code

Diagnostic trouble code (DTC) P0120 stands for “Throttle/Pedal Position Sensor ‘A’ Circuit.” It is triggered once the powertrain control module (PCM) detects abnormal voltage readings from one of your car’s TP or APP sensors.

How do I fix error code P0120?

What repairs can fix the P0120 code?

  1. Repairing or replacing the TPS connector.
  2. Repairing the wiring as necessary.
  3. Replacing the TPS with a new sensor.


What does P0120 mean?

Throttle/Pedal Position Sensor/Switch

OBD-II Code P0120 is defined as a Throttle/Pedal Position Sensor/Switch “A” Circuit Malfunction. The Throttle Position Sensor/Switch is located on the Throttle Body of the Intake Manifold and the Pedal Position Sensor/Switch is part of the Accelerator Pedal assembly.

How do you fix a throttle position sensor?

The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.

What happens if your throttle positioning sensor goes out?

The car might accelerate itself, hesitate to accelerate, or lack power when you are trying to accelerate. You may also experience difficulty in changing gears. There may be a dramatic drop in your cars’ fuel economy as a result of a faulty throttle position sensor.

How much does a throttle position sensor cost?

The average cost for throttle position sensor replacement is between $157 and $201. Labor costs are estimated between $55 and $69 while parts are priced between $102 and $132. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.

Where is the pedal position sensor located?

The sensor is usually located on the butterfly spindle/shaft, so that it can directly monitor the position of the throttle. More advanced forms of the sensor are also used.

Can a bad throttle position sensor cause a car not to start?

No Start Condition



Quite rarely but surely enough a bad throttle position sensor can create a no-start condition where you may be able to just crank the engine and not turn it over.

Can I clean my TPS sensor?

Zitat von Youtube: This doesn't get dirty that much so you can do this at least once a year or every six months whichever you prefer as you can see it's not that hard to remove. This. So you can clean it anytime.