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Home >> Cadillac >> 1993 >> Allante >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P053: 4X Reference Signal Interrupt From Ignition Control Module >> Description
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DTC P053: 4X Reference Signal Interrupt From Ignition Control Module: Description

If the PCM does not receive 4X reference pulses from the Ignition Control Module for more than 0.4 second while the engine is running, Code P053 is set.