How do I fix error 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 would cause a P0121 code?

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.

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 fix a throttle position sensor?

Here’s How To Replace a Throttle Position Sensor

Disconnect the Battery.
Unplug Old Sensor.
Remove Mounting Screws.
Remove Old Sensor.
Mount and Screw In New Sensor.
Re-Plug Wiring Harness.
Reconnect Battery Cables.
Q: I Don’t Have Time to Replace My Throttle Position Sensor, Can’t I Just Ignore It?

How do you test a GM TPS sensor?

How to Check the TPS Voltage on a Chevy Truck

Open the hood on the truck. Remove the engine’s air cleaner by removing the wingnuts.
Place the black probe from the voltmeter on the middle terminal inside the TPS. Place the voltmeter’s red probe on the the top, rearward terminal of the TPS.
Put the key in the ignition.

Will a bad TPS throw a code?

a faulty tps can set a trouble code in the computer if the voltage value is either not present, sporadic, slow or constant, and this can illuminate your check engine light.

How do I fix error P0121?