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Home >> Cadillac >> 1995 >> Eldorado Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Engine Control System - Tests W/Codes) >> Diagnostic Trouble Codes >> DTC P1258 - Engine Over-Temperature Protection >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 1996 Cadillac Seville, 1996 Cadillac Eldorado, and 1996 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic (OBD) System Check. After performing OBD system check, go to next step.
  2. Using scan tool, check if DTC P0108 or P1114 is set. If any of these DTC(s) are present, diagnose affected DTC(s). If DTC(s) are not present, diagnose cooling system.
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