How do you reset the throttle body sensor?
How do you reset the throttle body 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 are the possible causes of a p0121 Chevrolet?
P0121 CHEVROLET Possible Causes 1 Faulty Throttle Position Sensor 2 Throttle Position Sensor harness is open or shorted 3 Throttle Position Sensor circuit poor electrical connection 4 Faulty Engine Control Module (ECM)
What does code p0121 in OBD-II mean?
Intermittent stumble on acceleration or deceleration A code P0121 may mean that one or more of the following has happened: TPS has intermittent open or short internally Harness is rubbing and causing an open or short in the wiring Bad connection at the TPS Water or corrosion in connector or sensor
What is the diagnostic code for bad throttle position sensor?
Using a code reader, you should be able to confirm whether a faulty TPS is the culprit or a different component. Diagnostic trouble codes P0120, P0121, P0122, P0123, and P0124 are what will commonly appear. The engine can stall for no reason and without any warning. This happens when the TPS gives incorrect information to the ECM.
Why is my VW p0121 throttle position sensor not working?
The reason is because scan tools take samplings of many different readings over just one or two data lines and can miss an intermittent drop out. Hook up your oscilliscope and watch the signal. It should sweep up and down smoothly with no drop outs or spikes. 3. If no problems were noticed, perform a wiggle test.
What does the p0121 code on a Chevy mean?
On most newer models, the Throttle Position Sensor (TPS) is part of the Throttle Body assembly. Replacing the Throttle Body should take care of the code. The cost to diagnose the P0121 CHEVROLET code is 1.0 hour of labor.
Why does my Chevy Tahoe keep throwing p0121?
Most of the time, the problem when P0121 is thrown will be the TPS sensor itself. It no longer is accurately tracking how hard the fuel pedal is being pushed. Diagnosing the issue with a scanner or having a mechanic take a look can save the expense of buying a TPS sensor that your Tahoe does not actually need.
What is the trouble code on a Chevy Tahoe?
P0121 is a somewhat common trouble code with the Chevy Tahoe. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it leaves your vehicle in failsafe mode. OBDII code P0121 is a serious problem that requires serious attention.
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.
