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U0224 Lost Communication With Door Window Motor C

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

U0224 means door window motor C no longer reports in; GM's PIT5981B names it among the four window motor codes of its 2021–2025 full-size SUVs. Inside such a motor sits more than a driver stage: NXP's AN3147 reference counts Hall pulses to track glass position, detects pinching or stall and reports chip status such as overvoltage or overtemperature to the LIN master. The anti-pinch logic has to meet FMVSS 118, which permits automatic closing only if the glass reverses before it squeezes a test rod with 100 N or more. With the motor silent, the master sees neither position nor protection status, so functions built on them, such as one-touch closing, are generally unavailable. No MIL.

Likely causes

Broken bus or supply wire in the door harness

Motor electronics damaged (overvoltage, overheating, Hall sensor board)

Fuse or ground for motor C missing

Symptoms

One-touch up and down unavailable
Window in the affected door does not move
Glass stops at random points or not at all

Repair estimate

DifficultyMediumDIY possible

Parts and labour€40–650

Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

door window motor clin bus

References: static.nhtsa.gov, nxp.com, law.cornell.edu.