Code P1129, Map higher than expected?

It looks like you have a vacuum leak, or the throttle body needs to be serviced.

The code P1129 typically refers to "MAP sensor higher than expected."

Here is a guide to help you with the vacuum leak, test when the engine is cold only.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

And this guide can help with the throttle body service with instructions below to help you with your car.

https://www.2carpros.com/articles/throttle-actuator-service

If none of these work, I would try swapping out the MAP sensor which I have included the location for as well. Clear the codes once you are done. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.

Hi,

The code indicates the MAP (manifold absolute pressure sensor) signal is higher than it should be. There are a few things that can cause this code.

First, make sure there are no engine vacuum leaks. Specifically check the PCV hose to make sure it is connected and not cracked and leaking.

If that checks out good, then we need to jump into some diagnostics. I attached them below. Note, they diagnostics indicate the need for a scan tool that can communicate with the vehicle.

Take a look through the diagnostics and let me know if you have questions or if you feel comfortable performing them. If not or if you don't have the scan tool, you may want to consider replacing the MAP sensor. It could have failed.

Here is a link that explains how to locate an engine vacuum leak:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Also, I attached a picture below (last pic) showing the PCV and PCV hose. Make sure it isn't broken.

Let me know what you find.

Take care,

Joe

See pics below.

Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help.

Hi,

We would be happy to help. However, I have a favor to ask. We try to keep the posts specific to one problem and vehicle type so that they help others. Is it possible for you to start a new post? Just copy and paste your question and someone will be happy to help.

Here is the link to start a new one:

https://www.2carpros.com/questions/new

There is no charge for help, so feel free to start a new one.

I hope you understand.

Take care,

Joe