Lost Communication With Cruise Control Module
The U0104 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Cruise Control Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- hard
- Estimated cost
- $100 - $500 (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
- Cruise control completely inoperative
- Cruise control warning light on
- No other drivability symptoms
- May have Check Engine Light
Probable Causes (Ranked by Likelihood)
- Failed cruise control module Very High
- CAN bus wiring issue to cruise module High
- Corroded cruise module connector Moderate
- Cruise module power supply loss Low
Step-by-Step Diagnostic Procedure
-
Check cruise control module power and ground
-
Inspect module connector for corrosion
-
Verify CAN bus communication to the module
-
Check cruise control switches and clock spring
-
Replace cruise control module if needed
Frequently Asked Questions
Can I drive with code U0104?
Yes, you can drive. Lost communication codes indicate a module has stopped communicating on the vehicle network. The affected system may not function correctly.
What causes U0104?
The most common cause is a failed module or a wiring issue in the CAN bus network. Failed cruise control module is the most likely cause. Power supply, ground, and connector issues should be checked before replacing any module.
Is U0104 expensive to fix?
Repair costs range from $100 - $500 (parts and labor). Wiring repairs are on the lower end, while module replacement is on the higher end. The module may also need to be programmed after replacement.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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