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Home >> Isuzu >> 1994 >> Pickup 2D Pickup Extra Cab >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.1L EFI >> Code Charts >> Code 55 - Faulty ECM

Code 55 - Faulty ECM

Replace ECM unit. Clear codes and confirm closed loop operation. See CLEARING CODES under G - TEST W/ CODES. Ensure CHECK ENGINE light is off.

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