U04BC
Invalid Data Received from Switch Input Module C
U04BC is an OBD-II diagnostic trouble code meaning: Invalid Data Received from Switch Input Module C. Common causes: switch module c fault, damage to the wiring harness to the module. Estimated repair cost: $28–89.
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
Error U04BC by Vehicle Brand
FAQ
What does the U04BC code mean?
U04BC is an OBD-II diagnostic trouble code that indicates: Invalid Data Received from Switch Input Module C
What causes a U04BC error code?
The most common causes of U04BC include: Switch module C fault; Damage to the wiring harness to the module; Oxidized or bad contacts in connectors; Software error in the module.
How do I fix a U04BC diagnostic trouble code?
To fix U04BC: 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. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U04BC?
Yes, but get it checked soon
How much does it cost to fix U04BC?
The estimated repair cost for U04BC is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat