1992 Cadillac Seville BaseFACTORY OEM SERVICE PROCEDURE

Note On Intermittents

If PCM Code E013 is stored as a history code, start engine and enter diagnostics. Operate engine at fast idle until AUTO "closed loop" status light is turned on. Observe parameter of ED33 while manipulating wiring on circuits No. 412 and 413. If parameter ED33 changes from a fluctuating voltage to fixed .45 volt, repair intermittent open circuit.

Check circuit No. 413 for a good ground to engine (clean and tighten star washer). Ground for circuit No. 413 is located at right side of engine or rear of cylinder head.

Fig 1: PCM Code E013, Schematic, Right Oxygen (O2) Sensor Not Ready
G92E05014Courtesy of GENERAL MOTORS CORP.
Factory Service Tools

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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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