U2135
Lost Communication With Rear Integration Module
U2135 is an OBD-II diagnostic trouble code meaning: Lost Communication With Rear Integration Module. Common causes: open or short circuit in can circuit, rear integration module malfunction. Estimated repair cost: $33–167.
Symptoms
- Tail lights or brake lights don't work
- Errors in the parking system
- Rear windshield wipers do not work (if equipped)
- Check Engine Light Is On
- Malfunctions of other electronic systems
Causes
- Open or short circuit in CAN circuit
- Rear integration module malfunction
- Module power problems
- Corrosion of contacts or connectors
- Software error in the module
How to Fix
- Check the integrity of the wiring harness to the rear module
- Check the power supply and ground of the module
- Inspect connectors for corrosion or damage
- Scan the module for errors
- If necessary, replace the rear integration module
Related codes
FAQ
What does the U2135 code mean?
U2135 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Rear Integration Module
What causes a U2135 error code?
The most common causes of U2135 include: Open or short circuit in CAN circuit; Rear integration module malfunction; Module power problems; Corrosion of contacts or connectors.
How do I fix a U2135 diagnostic trouble code?
To fix U2135: Check the integrity of the wiring harness to the rear module. Check the power supply and ground of the module. Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U2135?
Limited driving only, diagnose soon
How much does it cost to fix U2135?
The estimated repair cost for U2135 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat