U04B6
Invalid Data Received From Catalyst Heater Control Module
U04B6 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Catalyst Heater Control Module. Common causes: malfunction of the catalyst heating control module, damage to the wiring harness to the module. Estimated repair cost: $50–167.
Symptoms
- Check Engine light comes on
- Possible starting problems in cold weather
- Reduced catalytic converter efficiency
- Deterioration of the vehicle's environmental performance
Causes
- Malfunction of the catalyst heating control module
- Damage to the wiring harness to the module
- Module power problems
- Corrosion of contacts in connectors
- Software error in the module
How to Fix
- Diagnostics of the module power circuit
- Checking the integrity of the wiring harness
- Diagnostics of connectors for corrosion
- Checking the functionality of the control module
- Update module software if necessary
Related codes
Error U04B6 by Vehicle Brand
FAQ
What does the U04B6 code mean?
U04B6 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Catalyst Heater Control Module
What causes a U04B6 error code?
The most common causes of U04B6 include: Malfunction of the catalyst heating control module; Damage to the wiring harness to the module; Module power problems; Corrosion of contacts in connectors.
How do I fix a U04B6 diagnostic trouble code?
To fix U04B6: Diagnostics of the module power circuit. Checking the integrity of the wiring harness. Diagnostics of connectors for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U04B6?
Limited driving only, diagnose soon
How much does it cost to fix U04B6?
The estimated repair cost for U04B6 is $50–167. Actual cost depends on your vehicle, location, and labor rates.
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