U01B2
Lost Communication With Planetary Gear Set Control Module
U01B2 is an OBD-II diagnostic trouble code meaning: Lost Communication With Planetary Gear Set Control Module. Common causes: broken or damaged wires in the communication circuit, poor contact in module connectors. Estimated repair cost: $56–278.
Symptoms
- Incorrect gear shifting
- Transmission of the gearbox into emergency mode
- The Check Engine light comes on
- Reduced vehicle dynamics
- Possible jerking when changing gears
Causes
- Broken or damaged wires in the communication circuit
- Poor contact in module connectors
- Planetary control module malfunction
- Module power problems
- CAN bus fault
How to Fix
- Check the integrity of the wiring harness to the module
- Inspect and clean the contacts in the connectors
- Check the module supply voltage
- Scan the CAN bus for errors
- If necessary, replace the control module
Related codes
Error U01B2 by Vehicle Brand
FAQ
What does the U01B2 code mean?
U01B2 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Planetary Gear Set Control Module
What causes a U01B2 error code?
The most common causes of U01B2 include: Broken or damaged wires in the communication circuit; Poor contact in module connectors; Planetary control module malfunction; Module power problems.
How do I fix a U01B2 diagnostic trouble code?
To fix U01B2: Check the integrity of the wiring harness to the module. Inspect and clean the contacts in the connectors. Check the module supply voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01B2?
Do not drive — repair immediately
How much does it cost to fix U01B2?
The estimated repair cost for U01B2 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat