Pcm Code P053 - Distributor Signal Interrupt: Notes
WARNING: This page is about a different car, the 1993 Cadillac Seville and 1993 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
PCM Code P053 is set if PCM does not receive distributor reference pulses from Ignition Control Module (ICM) for more than .4 second. Since PFI system requires ICM pulses in order to trigger injectors, most occurrences of PCM Code P053 will be accompanied by a stall.