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Home >> Cadillac >> 1993 >> Allante >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P058: Pass Key® Fuel Enable Problem >> Description

DTC P058: Pass Key® Fuel Enable Problem: Description

Code P058 is an indication that the Fuel Enable Input has failed after a good signal was received in a given engine run cycle, The PASS Key® system enables engine operation by:

  1. Allowing the starter motor to engage.
  2. Issuing a Fuel Enable signal to the PCM.
Once the engine is running the PCM continuously monitors the Fuel Enable signal, testing for a circuit or PASS Key® module failure that would prohibit a positive fuel enable on future ignition cycles. The PCM will not cancel fuel injection after it has been approved within a given ignition cycle. Therefore, stalling conditions cannot be the result of PASS Key® system failure.

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