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YOUR RESEARCHPSM abs failure - car shuts off. HELP!
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Recommend ecu
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Suggestion · Original poster
That is why he's recommending the new ECU, but also not sure if memory has been exceeded on the ecu.
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Suggestion
If that doesn't clean out the P0604 code, then we can replace your DME.
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I have a 2003 911 turbo x50 that's had the engine upgraded (alpha 28 turbos, Carrillo rods, custom dyno tune, etc) with 44k miles. It doesn't happen all the time, but seems to happen more frequently the more I drive the car. The car essentially goes into limp mode. Car turns off. I have to pull to the side of the rode and I get the Christmas tree of lights. ABS PSM lights come on. Sometimes I have to leave the car for a night and when I pick it up it's like nothing happened. Then when I scan the code I get code P0604 internal control module random access memory (ram) error. Could this be something associated with the tune and ecu? I searched and found everything from brake sensor to steering issue, but nothing around control module. Any help appreciated. Thanks.
Talked to him and He thinks I need a new ecu. Is this something you guys think I should pay for or see if he can remedy the tune. Could this be his error?
Better look up the ECU Doctors and give them a call. If the flash of your existing ECU left it brain fried, I don't think I would be going back to the shop that did it. And have you priced what a new ECU costs? Plus it has to be programmed to your car and alarm module. And you have to consider that you need a special tune flashed to the ECU for your car modifications.
http://www.ecudoctors.com/
What did he agree to do and was there any warranty of the services he provided. How much time elapsed between tune and your current problems - days, weeks, months??
The tuner thinks that the issues are derived from a bad soder which is why it's causing a fail code from the previous owner who tuned the car. That is why he's recommending the new ECU, but also not sure if memory has been exceeded on the ecu.
Read up on this
https://www.obd-codes.com/p0604
This is a highly unusual error code. It could be bad programming, or a failing ECU. Thus my suggestion you call the ECU Doctors for advice. They have posted in other threads on here and are very helpful. The first thing I would check is your voltage levels and supply to the ECU, and change out the ECU relay.
DBJoe996, thanks for the support.
Yes, code P0604 is a bad DME / ECU.
Sometimes reprogramming the unit will cause this issue because the tuning data goes in and corrupts something else while it's getting "flashed" onto the computer.
Other times there are power fluctuations in the car, or worse, from the scanner itself, while it it getting flashed and this can interrupt the programming process and will also corrupt the data or electronic components.
Ask your tuner to try to reflash it back to stock and see if that cleans the memory in the DME.
If that doesn't clean out the P0604 code, then we can replace your DME.
Call us if you have other technical questions.
I would try and follow-up with your tuner as ECU doctors has suggested. If he insists that a new DME/ECU is required AutoAtlanta has one for Motronic $1,668 or OE Porsche $3,537. Programming to your vehicle/immobilizer etc. I would say cost would be upwards of around $500. For your special tune...who knows.
Or call ECU Doctors and get the help you really need. Call them for shipping instructions. You need to send them the DME/ECU and immobilizer together along with some other information (VIN).
