Invalid Data Received From Auxiliary Climate Module
The U0455 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Auxiliary Climate Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $150 - $600 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Auxiliary heater not matching temp setting
- PTC heater output inconsistent
- Heated steering wheel temp wrong
- Auxiliary defrost not working properly
Probable Causes (Ranked by Likelihood)
- Failed auxiliary climate module Very High
- PTC heater element fault High
- CAN bus data error Moderate
- Temperature feedback sensor issue Low
Step-by-Step Diagnostic Procedure
-
Check auxiliary heater operation
-
Scan auxiliary climate module
-
Test PTC heater elements
-
Verify temperature sensor readings
Frequently Asked Questions
Can I drive with U0455?
Yes. Main climate system still works.
What causes U0455?
Usually a PTC heater element or temperature sensor fault.
How much to fix?
Typically $150 to $600.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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