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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Turbo wastegate stuck closed. Need solution.

Hello. P2261 is the code for an issue with the vehicle's turbocharger bypass valve, also known as the wastegate. If the computer detects an issue with the wastegate circuit or signal it will activate the Check Engine Light in order...

Q: Hi, I need ac and alternator belt installed. What would be the cost

Hi there. In order to provide you with an accurate estimate, we need you to request a price quote for an AC belt replacement; as well as an alternator belt replacement. Thanks!

Q: Radiator fan cover???

Thanks for writing in about your 2003 Infiniti J35. This is the radiator fan shroud upper and lower. They are the same as a radiator fan cover. If you need to have a technician inspect your the noise to verify...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...