OBD-II code · Network
U0225 Lost Communication With Door Window Motor D
The ECU has lost communication with door window motor D, a smart window motor with its own bus interface. One-touch and anti-pinch operation of that window stops, and it may work only manually, if at all. Causes: loss of power or ground at the motor, a broken bus or supply wire in the door harness, a damaged door connector, or a failed motor module.
Is it safe to drive with U0225?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Window Motor D, Can Bus
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.