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Home >> Pontiac >> 1988 >> Fiero Formula, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 2.8L VINS [S,9] PFI CEC Tests W/Codes >> Diagnostic Code Flow Charts (Code Charts) >> Code 55 - ECM Error

Code 55 - ECM Error

Ensure ECM grounds are okay. If okay, replace ECM. Clear codes and confirm "closed loop" operation and no "SERVICE ENGINE SOON" light.

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