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Home >> Oldsmobile >> 1998 >> Eighty-Eight LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Engine Control Systems Tests W/Codes) >> Diagnostic Trouble Codes >> DTC P0602 - Pcm Not Programmed >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 1997 Pontiac Bonneville, 1997 Oldsmobile Regency, 1997 Oldsmobile LSS, 1997 Oldsmobile Eighty-Eight, and 1997 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK. See the BASIC TESTING - 3.8L article. Read and record FREEZE FRAME and/or FAIL RECORDS data for each DTC set. Go to next step.
  2. Using special equipment, program PCM with correct software. Using scan tool, retest for DTC P0602. If DTC P0602 sets, go to next step. If DTC does not set, repair is complete.
  3. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, repeat OBD system check.
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