U020B
Lost Communication With Door Control Module H
U020B is an OBD-II diagnostic trouble code meaning: Lost Communication With Door Control Module H. Common causes: open or short circuit in the door module circuit, door control module malfunction. Estimated repair cost: $17–89.
Symptoms
- Power windows don't work
- Problems with central locking
- Error indication on the dashboard
- The door does not respond to commands from the key fob
- Intermittent operation of door functions
Causes
- Open or short circuit in the door module circuit
- Door control module malfunction
- Wiring Harness Problems
- Contact corrosion
- Software failure in the module
How to Fix
- Check fuses associated with the door module
- Inspect the wiring harness for damage
- Check module connections and contacts
- Scan the module for errors
- If necessary, replace the door control module
Related codes
Error U020B by Vehicle Brand
FAQ
What does the U020B code mean?
U020B is an OBD-II diagnostic trouble code that indicates: Lost Communication With Door Control Module H
What causes a U020B error code?
The most common causes of U020B include: Open or short circuit in the door module circuit; Door control module malfunction; Wiring Harness Problems; Contact corrosion.
How do I fix a U020B diagnostic trouble code?
To fix U020B: Check fuses associated with the door module. Inspect the wiring harness for damage. Check module connections and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U020B?
Limited driving only, diagnose soon
How much does it cost to fix U020B?
The estimated repair cost for U020B is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat