U012A
Lost Communication With Chassis Control Module A
U012A is an OBD-II diagnostic trouble code meaning: Lost Communication With Chassis Control Module A. Common causes: broken or damaged wiring to the chassis control module, poor contact in module connectors. Estimated repair cost: $56–278.
Symptoms
- The Check Engine light comes on
- Disabling stabilization systems and ABS
- Inability to activate some security features
- Intermittent problems with landing gear systems
- Errors in other related systems
Causes
- Broken or damaged wiring to the chassis control module
- Poor contact in module connectors
- Malfunction of the chassis control module itself
- Problems with module power or grounding
- Short circuit in the CAN bus circuit
How to Fix
- Check the integrity of the wiring to the chassis control module
- Clean the module connector contacts
- Check the supply voltage and grounding of the module
- Scan module memory for additional errors
- Replace the chassis control module if necessary
Related codes
Error U012A by Vehicle Brand
FAQ
What does the U012A code mean?
U012A is an OBD-II diagnostic trouble code that indicates: Lost Communication With Chassis Control Module A
What causes a U012A error code?
The most common causes of U012A include: Broken or damaged wiring to the chassis control module; Poor contact in module connectors; Malfunction of the chassis control module itself; Problems with module power or grounding.
How do I fix a U012A diagnostic trouble code?
To fix U012A: Check the integrity of the wiring to the chassis control module. Clean the module connector contacts. Check the supply voltage and grounding of the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U012A?
Do not drive — repair immediately
How much does it cost to fix U012A?
The estimated repair cost for U012A is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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