Will my car shift without the TCM?

The transmission enters limp mode — usually stuck in 3rd gear. Driveable but with limited function.

Can water damage the TCM?

Yes — on some vehicles the TCM is mounted low and can be damaged by flooding or deep water.

High Severity

Network/Communication System

Communication lost between the ECM and transmission control module.

Common Fix

Repair wiring or replace TCM

Estimated Cost (DIY)

$0 - $600

CAN bus wiring faultlikely

Failed TCMpossible

TCM fuse blownpossible

Need to read or clear this code?

Will my car shift without the TCM?: The transmission enters limp mode — usually stuck in 3rd gear. Driveable but with limited function.
Can water damage the TCM?: Yes — on some vehicles the TCM is mounted low and can be damaged by flooding or deep water.

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