Do you know what diagnostic code 12 means on a 1993 chevy camaro Z28? Please help?

Asked by Jan 10, 2007 at 11:39 PM about the 1993 Chevrolet Camaro Z28

Question type: Maintenance & Repair

Do you know what diagnostic code 12 means on a 1993 chevy camaro Z28? Please help?

2 Answers

14,840

Hello luxor1- I can't find a diagnostic trouble code 12 for a 1993 Chevrolet. My sources have the codes starting at 13. Could you check that and get back to me. Good luck from Bovan.

50

I know that on a third gen code 12 means that your diagnostics are working correctly. C3 TROUBLE CODES 12- Normal code with ignition on and engine off. Indicatesno distributor reference pulse to ECM. Not stored in memory. This code will flash whenever the diagnostic terminal is grounded with the ignition turned On and the engine not running. If additional trouble codes are stored in the ECM they will appear after this code has flashed three times. If this code appears while the engine is running, no reference pulses from the distributor are reaching the ECM. Here are two sites with codes- http://www.totse.com/en/bad_ideas/scams_and_rip_offs/gm_codes.html http://www.montecarloss.com/SSThunder/gmcodes.html

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