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audi_a4_turbo
02-17-2015, 07:29 PM
Just installed a rebuilt alternator on my b5 atw, I was driving on the hwy and bogged and than the epc light came on and car dies, it won't start, scanned it and got code p1517, does it have to do with my ecu relay or pump relay?

T.pops
02-17-2015, 07:48 PM
Id say ecu power relay.

Corrado_Guy
02-17-2015, 09:01 PM
Is your new alternator even charging? What is the voltage in your battery right now? If you throw it on a charger will it start?

audi_a4_turbo
02-17-2015, 09:26 PM
Yes the new alternator is charging the car, I'm getting 14 volts on the gauge

B5A4coastie
02-18-2015, 03:17 AM
Does it stay at 14 while you're trying to start the car?

audi_a4_turbo
02-18-2015, 06:23 AM
No it starts a 12v and than when I crank it, it's drops, once the car started it would go to 14v

Corrado_Guy
02-18-2015, 07:45 PM
Check your plugs, check for spark, make sure the coils are plugged in tightly and seated properly on the plugs, make sure the plugs are good, check the injector wiring, check all fuses, check for fuel pressure, and do a compression check. Somewhere in there you will find the problem. Does the code come back once you clear it and try starting the motor again?