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CEL Light

Recommended Posts

I recently installed an amp\sub in the car.

Unfortunately after powering up the CEL came on. In my attempt to diagnose the problem I unhooked the amp from the battery. Its been almost two days now and no more CEL.

Loren was able to elaborate on the code...

P0650 Check Engine Malfunction Indicator Light (MIL) – Open Circuit

Fault area

– Break in wiring

– Short to ground

– Short to B+ (+12 volts)

That leads me to believe that something with the AMP is causing the CEL. My guess either a bad ground, or the amp is drawing too much power from the battery causing other systems in the car to fail. (I haven't noticed any other issues with the car)

So my question is two-fold...

1) Will a bad ground cause the CEL to come on?

2) Will a heavy draw from the battery cause the CEL to come on? (im considering going to buy a Optima Red top tonight and see if that helps at all)

Any suggestions?

Thanks again!!

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You already have a thread going on this - why start another?

I thought that since I had narrowed it to two specific issues it might have warranted a new thread, my apologies...

I think I may have fixed the issue however, I believe it was the ground. This thread can be deleted...

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