Code 53 - Loss Of Distributor Reference Signal

Code 53 indicates that ECM lost distributor signal after engine was started. If distributor reference pulses are interrupted for a short period of time, engine may not stall but code 53 will be stored. If pulses are interrupted for an extended period of time, the engine will stall, code 53 will be stored, and code 12 will be set upon attempting to restart.

If code 53 is stored but does not result in a no start condition, it should be treated as an intermittent code 12.