Loss of power - (ECM). Once we were able to get briefly get power back to the car, I got the following codes: p0607, P1408, p1407, and p16db.

[SmilinAssassin]

The only mods I have that have electrical interaction are taillights and F1 Style 4th break light/reverse light. I also use BimmerCode for auto sports mode, mirror tilt, and a few other mods.

I stopped at a restaurant and came back to no power and my wipers running. I had it towed back to the house and was able to get power back long enough to pull the codes, and it is back off again.

Any help is greatly appreciated.

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[skyviper80]

Power like battery power?

 

[SmilinAssassin]

Power like battery power?

Correct. No power to the inside of the car. The only power was to the wipers and the alarm when entering the car with a valet key.

 

[skyviper80]

Correct. No power to the inside of the car. The only power was to the wipers and the alarm when entering the car with a valet key.

Charge your battery.

If it's not a daily driver you need to put it on a battery tender.

 

[SmilinAssassin]

Charge your battery.

If it's not a daily driver you need to put it on a battery tender.

I have it on a CTEK battery tender that is hard wired.

 

[skyviper80]

All your codes are electrical from what I can find. If you know the battery is good then need to look for a bad connection somewhere.

 

[SmilinAssassin]

All your codes are electrical from what I can find. If you know the battery is good then need to look for a bad connection somewhere.

Thank you. I’m going to be testing the battery tomorrow, and then the connections with the lights my son and I put in.

 

[razorlab]

and then the connections with the lights my son and I put in.

I'll save you the time and tell you to start there.

 

[SmilinAssassin]

Update: I put the battery on a trickle charger and then put it on the tender. I haven’t had any issues since, but I’m not sure that I’m out of the woods yet. One lesson learned is that the car goes on the tender every night from here forward if I’m not driving it for a few days.

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