How do I fix error code P0121?
What repairs can fix the P0121 code?
- Repairing or replacing the TPS connector.
- Repairing the wiring as necessary.
- Replace the TPS with a new sensor.
What can happen if you don’t fix a P0121?
The P0121 code leads the engine ECM land on a failsafe mode, thus causing a wide range of drive complaints prior to when repairs are accomplished. These symptoms rise as a slow acceleration, high idle, bucking/jerking, speed limits or stalling, which all depends on the maker’s failsafe mode challenge.
How do you reset the throttle position sensor on a Chevy Silverado?
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 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 .
How do you reset a TPS?
Hold the TPMS reset button until the tire pressure light blinks three times, then release it. Start the car and wait 20 minutes for the sensor to refresh. The TPMS reset button is usually located beneath the steering wheel. If you are unable to find it, refer to your vehicle’s owner’s manual.
What does the p0121 code on a Chevy mean?
P0121 CHEVROLET Meaning The throttle position sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM).
What does p0121 mean on a TPS circuit?
Your TPS “A” Circuit has an expected output voltage range, as does your TPS “B” Circuit (if so equipped). 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.
What happens when code p0121 is triggered on ECM?
When code P0121 is triggered, your ECM will go into failsafe mode. Depending on the failsafe strategy of your car, this could lead to limited speeds or acceleration. This problem can also cause intermittent knocking and even stalling for your vehicle. In some cases, the car will not be capable of driving to the shop and will need to be towed.
What is the trouble code on a Chevy Silverado?
P0121 Chevy Silverado. P0121 is a somewhat common trouble code with the Chevy Silverado. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor.