U04BC

Invalid Data Received from Switch Input Module C

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Some controls in the cabin do not work
Incorrect operation of some vehicle functions
Other system errors may appear
The Check Engine Light or Other Warning Light Comes On

Causes

Switch module C fault
Damage to the wiring harness to the module
Oxidized or bad contacts in connectors
Software error in the module
Module power problems

How to Fix

Check the integrity of the wiring harness to the module
Clean and check contacts in connectors
Check the power supply and ground of the module
Try to reboot the module (disconnect the battery for 10 minutes)
If necessary, replace switch module C

Related codes