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Home >> Volvo >> 2000 >> V70 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - Turbo >> Diagnostic Tests >> P1627-P1629/ECM-901A: Communication Control Module, Communication Problems >> Diagnostic Procedure
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Diagnostic Procedure

ECM has registered an internal fault. Replace with a known good unit. See REMOVAL, OVERHAUL & INSTALLATION - EXCEPT S40 & V40 article.

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