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P1602 Diagnostic Trouble Code Discussion for June 2004

Powertrain Control Module Not Programmed


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Trouble Ticket Help Requests for DTC P1602
Help Request Posted
1999 Saturn SC2 1.9L Surge, Misfire VIN: 1G8ZR1274X
P1602: PCM Serial Communications. CAR WAS BROUGHT IN FOR BASIC SERVICE ALSO COMPLAINED ABOUT JERKING ON SLIGHT ACCELERATION AND STALLING. INSPECTED TPS NO PROBLEM NOTED WITH WAVE FORM. INSPECTED THROTTLE BODY CLEANED THROTTLE PLATE. TEST DROVE CAR AND PROBLEM STILL NOTED. iNSPECTED WIRES AND P...
June 07, 2004