U0225: Lost Communication With Door Window Motor D
What to do
The car drives normally. Check the rear window lockout switch first if this is a rear window — see U0224.
One thing worth knowing, because it looks far worse than it is: if closing all the windows from the key fob has stopped working, that can be caused by a single faulty window. The car will not close windows unattended unless it is sure the trap protection works on all of them, so one motor out of action disables the feature for the whole vehicle. It usually returns as soon as that one window is sorted.
And count how many windows misbehave. All four at once is almost always a power-loss issue needing re-initialisation, not four failures — see U0222 for the procedure, which costs nothing to try.
What this code means
The fourth door window motor has stopped being heard from. See U0222 for the family's framing and U0224 for the rear window lockout, which should be eliminated first.
On a four-window car this completes the set, so the counting test applies: how many windows are affected decides where the fault is. All four losing one-touch together is a power-loss and re-initialisation story, not four failed motors. One window alone is a fault in that door.
What is worth adding at the end of the series is the global-close feature, because it produces a complaint that sounds like a fault and is not. Many vehicles will close every window at once from the key fob or by holding the lock button, and that convenience function is normally disabled the moment any window motor loses its learned position or its network address — because the vehicle will not close windows unsupervised when it cannot guarantee anti-trap protection on all of them.
So one faulty window motor can stop every window closing from the key, which reads as a much bigger electrical problem than it is. Recognising that a global-close failure can have a single-window cause saves a great deal of unnecessary investigation, and it usually comes back the moment the one affected window is re-initialised or repaired.
Likely causes
Start here
Less common
- Broken wire in the door harness boot · moderate
- Water ingress into the module connector · moderate
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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