V6 Tech 1967-2002 V6 Engine Related

Dtc E504, E545, 7700, 7900 & 8100

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Old 10-02-2006, 11:48 AM
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Dtc E504, E545, 7700, 7900 & 8100

While chasing down a misfire problem (now isolated to 1 particular injector), I am also getting these codes on my reader....but not on a consistent basis.

Neither the code book with the reader, nor the Factory Manual (at least what I can find) shows these codes.

Now, after swapping No. 1 & 3 coils & injectors, I'm getting the red "brake" and "ABS inop" on the dash....but not all the time. If I do an off-on of the ignition, the brake/ABS resets but usually comes back on after about 1 mile. Stepping/not stepping on the brake has no effect in setting this particular warning.

Only reason I mention swapping coils/injectors is that I was working right near the ABS module. Thinking I bumped and disturbed the connector, I pulled off the connector to the module and sprayed it with electrical contact cleaner and reinstalled the connector, but still getting the warning.

I don't have the scan tool mentioned in the FSM that will tell me if the ABS Module is defective...which I doubt. I suspect a loose electrical connection.

2000 Camaro V6 auto/air/4whl disc/ABS (No Traction) 144k miles

Thanks for any help or suggestions.

Last edited by DMGroh; 10-02-2006 at 02:55 PM.
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Old 10-02-2006, 02:49 PM
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Re: Dtc E504, E545, 7700, 7900 & 8100

im not really sure of your problem but the year of the car might help others determin the problem. good luck with your car
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