1995 Cadillac Eldorado BaseFACTORY OEM SERVICE PROCEDURE

Code P058, Pass-Key(R) Fuel Enable Problem: Action

"THEFT SYSTEM PROBLEM, CAR MAY NOT RESTART" message is displayed on DIC. Enables fuel injection on future ignition cycles without regard for PASS-Key(R) fuel enable input status.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. If engine will crank, problem has been isolated to PASS-Key(R) module, PCM or fuel enable circuit. If engine will not crank, perform PASS-Key(R) system diagnosis. See PASS-KEY(R) DIAGNOSIS.
  2. Checking voltage to PCM will identify if PCM is at fault. Typical signal will be about 2-3 volts.
  3. Checks if PCM is recognizing cranking fuel enable signal from PASS-Key(R) decoder module.
  4. Checks circuit No. 229 for short or open circuit. If circuit is okay, check PASS-Key(R) module terminal contacts.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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