Transmission Control Module (TCM) Wrong Configuration
The TCM is not configured correctly for the vehicle's transmission.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The transmission control module isn’t programmed to work with this specific transmission system, which can cause shifting issues or prevent the vehicle from operating normally.
What the computer is actually seeing
The vehicle's computer checks the TCM settings and finds they don’t match the expected configuration based on the transmission type.
What a healthy reading looks like
TCM settings should match the specifications for the installed transmission; check configurations via OEM service tool.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check wiring and connectors to the TCM for damage or corrosion. Repair or replace as needed.
- 22. Verify the TCM is the correct part number for the vehicle's make and model.
- 33. Use an OEM service tool to check current TCM configurations against expected settings. If incorrect, proceed to reprogram.
- 44. If reprogramming fails, consider replacing the TCM.
Common causes
- Incorrect TCM installed
- Reprogramming not completed after TCM replacement
- Faulty wiring to TCM or connectors
- Lost programming due to battery disconnect
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
It may not be safe; the vehicle could experience shifting problems or go into limp mode.
Will this code come back after clearing?
If the underlying issue isn't fixed, the code will likely return.
Why is this code paired with other codes?
Codes related to TCM often appear together due to interrelated functions or causes.
Working a real vehicle right now?
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