U01BD
Lost Communication With DC/DC Converter Control Module C
U01BD is an OBD-II diagnostic trouble code meaning: Lost Communication With DC/DC Converter Control Module C. Common causes: open or short circuit in the communication circuit, dc/dc module failure. Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Problems with the start-stop system
- Reduced hybrid system efficiency
- Unstable operation of the vehicle's electrical system
- Errors in other related systems
Causes
- Open or short circuit in the communication circuit
- DC/DC module failure
- Poor contact in connectors
- Module power problems
- Software error in the ECU
How to Fix
- Check the integrity of the wiring harness and connectors
- Check the power and ground of the DC/DC module
- Scan the DC/DC module for additional errors
- If necessary, replace the DC/DC module
- Update ECU software if updates are available
Related codes
Error U01BD by Vehicle Brand
FAQ
What does the U01BD code mean?
U01BD is an OBD-II diagnostic trouble code that indicates: Lost Communication With DC/DC Converter Control Module C
What causes a U01BD error code?
The most common causes of U01BD include: Open or short circuit in the communication circuit; DC/DC module failure; Poor contact in connectors; Module power problems.
How do I fix a U01BD diagnostic trouble code?
To fix U01BD: Check the integrity of the wiring harness and connectors. Check the power and ground of the DC/DC module. Scan the DC/DC module for additional errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01BD?
Yes, but get it checked soon
How much does it cost to fix U01BD?
The estimated repair cost for U01BD is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat