U0139
Lost Communication With Suspension Control Module B
U0139 is an OBD-II diagnostic trouble code meaning: Lost Communication With Suspension Control Module B. Common causes: open or short circuit in the communication circuit, suspension control module b malfunction. Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Suspension operates in emergency mode
- Deterioration in ride comfort
- Lack of response to suspension adjustments
- Error message on the dashboard
Causes
- Open or short circuit in the communication circuit
- Suspension control module B malfunction
- Module power problems
- Corrosion or oxidation of contacts
- Wiring Harness Problems
How to Fix
- Check the integrity of the communication circuit between the ECU and the module
- Check power supply and grounding of the module
- Inspect contacts for corrosion
- Check wiring harness for damage
- If necessary, replace suspension control module B
Related codes
Error U0139 by Vehicle Brand
FAQ
What does the U0139 code mean?
U0139 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Suspension Control Module B
What causes a U0139 error code?
The most common causes of U0139 include: Open or short circuit in the communication circuit; Suspension control module B malfunction; Module power problems; Corrosion or oxidation of contacts.
How do I fix a U0139 diagnostic trouble code?
To fix U0139: Check the integrity of the communication circuit between the ECU and the module. Check power supply and grounding of the module. Inspect contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0139?
Limited driving only, diagnose soon
How much does it cost to fix U0139?
The estimated repair cost for U0139 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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