PassoFix

U1001 · blink 85 – Abnormal communication sending with EFI

System
AT (4-speed, K3-VE E4A/T per spec table A1-3)
Dashboard light
Automatic gearbox warning light
Check-engine blink code
85
Applies to
M300/M301 export; JDM Boon/Passo 1st gen by platform
Description
Abnormal communication sending with EFI
Detection / symptoms
Warning lamp per chart (see page)
Possible causes
Abnormal communication sending with EFI
What to check
Follow manual section procedure for this code
Confidence
high (factory chart); description parsing medium

From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights

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