P0121 CHEVROLET code

When code P0121 occurs, it means that your Engine Control Module (ECM) recognized that your throttle position “A” circuit’s expected output voltage has either gone above or below the sensor’s expected range. When code P0121 is triggered, your ECM will go into failsafe mode.

How do I fix error code P0121?

What repairs can fix the P0121 code?

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

What would cause a P0121 code?

Diagnostic trouble code (DTC) P0121 stands for “Throttle/Pedal Position Sensor “A” Circuit Range/Performance Problem.” The ECM/PCM stores this code (or some other similar codes) if the module detects that the Throttle Position Sensor is operating outside of a predetermined range.

How do you reset a throttle pedal 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.

How do you fix a faulty throttle sensor?

Most of the time, a bad sensor cannot be fixed. You will need to replace the TPS with a new sensor. You will, however, need to diagnose the problem before replacing the sensor. You want to make sure that the TPS is the root cause of your issue so that you don’t replace it for no reason.

What causes throttle position sensor code?

Code P0122 is triggered when your vehicle’s Engine Control Module (ECM) detects that your Throttle Position Sensor (TPS) circuit A is reporting an output voltage that is below its expected voltage. Depending on your vehicle, your TPS lower output voltage limit should be around .

Where is the throttle position sensor located?

A throttle position sensor (TPS) is a sensor used to monitor the air intake of an engine. The sensor is usually located on the butterfly spindle/shaft, so that it can directly monitor the position of the throttle.

How do I clean my throttle body?

Zitat von Youtube: Go ahead and relieve the pressure remove. It and then just let it close nice and gentle notice we've still got a little bit of debris on this side of the throttle plate.

How do you test a Chevy throttle body?

Zitat von Youtube: Now as i open the throttle plate the resistance value should decrease. And as i close the throttle plate the resistance value should increase.

How do I reset my Chevy throttle body?

Make sure that the accelerator pedal is fully released. Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds. Turn ignition switch “ON” and wait at least 2 seconds.

How do you adjust the throttle position sensor on a Chevy?

Zitat von Youtube: By simply closing or plugging the idle control valve adjusting the throttle screw for a minimum idle speed. And then readjusting the TPS. The desired idle condition can always be met by the engine.