P0884 Code: TCM Power Input Signal Intermittent

Your vehicle’s transmission control module (TCM) controls your transmission and must have good power and ground at all times. If your scan tool retrieves a P0884 code, it might be time to have your TCM and transmission checked. This code is one of several trouble codes related to a fault with the module or its circuit. Learn more about this trouble code in this article.

What Does the P0884 Code Mean?

Diagnostic trouble code (DTC) P0884 stands for “TCM Power Input Signal Intermittent.” The code is triggered when power to the TCM has been lost at some point.

The TCM determines the best transmission settings for your ride by retrieving data from systems and sensors. The module also controls various aspects of transmission operation.

The module must have good power and ground at all times. If power to the TCM is interrupted at some point, code P0884 will be triggered.

Note: The definition of code P0884 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0884 Code?

• TCM failure
• Circuit issues, such as a damaged wire or poor connection
• Battery or charging system problems

What are the Common Symptoms of the P0884 Code?

• Illuminated check engine light
• Transmission shift issues
• Vehicle stuck in “limp” mode

How to Diagnose the P0884 Code

DTC P0884 is a generic powertrain code that can be logged in any vehicle equipped with an OBD-II system. Although it’s a common trouble code, it doesn’t mean that there’s a universal solution for the problem.

If you’re not familiar with diagnosing TCM issues, it might be best to have a trained professional do the job for you. Otherwise, you can go ahead and do it yourself.

The video below will give you an idea of what the diagnostic process might involve:

How to Fix the P0884 Code

It’ll be hard to diagnose and repair any trouble code if you don’t have the tools and technical know-how to get the job done. We strongly recommend taking a trip to an auto repair shop. A professional would know how to diagnose the problem and rule out any other issue that might be causing similar symptoms.

If you think you have the automotive know-how to repair your ride, it’s a good idea to review the appropriate repair manual to identify the correct diagnostic and repair procedure. Guides like those from Chilton or an ALLDATA subscription contain vehicle-specific repair information, so you might want to check those out before you begin.