P0602 on the 1999 Cadillac Catera
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| CAG19990029 | 1999-08-04. Service bulletin. SOME VEHICLES MAY EXPERIENCE A DIAGNOSTIC TROUBLE CODE (DTC) P0602 AFTER AN ENGINE CONTROL MODULE (ECM) OR TRANSMISSION CONTROL MODULE (TCM) REPLACEMENT. *TT |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.