Skip the auto shop - Our mechanics make house calls

Q: My car is on Limp mode.

asked by on

My car is on Limp mode and is showing the following codes: P1121 and P1124. I replaced the throttle body and the circuit board for the relay.

A: Hi. Most of the time when these codes come ...

Hi. Most of the time when these codes come up it is because the throttle body has failed. If you replaced the throttle body and cleared the codes and the problem persists then there may be another issue. When replacing the throttle body you also should check and replace the connection. It is common for the terminals to have connection issues. I would also check the voltage at the throttle body to ensure that it does not have a circuit issue. If these are not tests that you are comfortable with then you should enlist the assistance of a certified mechanic that has the tools to do this, like one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Difficulty accelerating during cold start

Hey there. The most common causes of the decreased throttle response is due to a torque converter fault or a failing fuel pump. The first thing a technician would do is to check the code to get a better idea...

Q: Airbag light appears on dashboard

If the battery was disconnected by the shop replacing the water pump, the battery disconnect/reconnect would set the SRS light. I would call the shop and ask them about it ask them to check the light and reset the code...

Q: Need to start car after sitting for a year

I recommend having a mechanic, such as one from YourMechanic, run a couple of tests: the fuel should be checked to see if it needs to be replaced, and a 75 point safety inspection should be carried out.

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.