Haven Posted October 27, 2019 Share Posted October 27, 2019 Ok folks- here is a puzzle. 2007 5EAT Turbo sudden P0607 code. All craps out car basically rolls to a stop. Can clear code and drive low RPM and it will hold long enough to get somewhere. But any RPM over about 4K and it craps all over again. No other codes. So hooked up to Free SSM and solid connection to ECU and engine runs fine. But reaching the TCU is not possible. It will connect maybe 10% of the time at ignition "on" but as soon as I start the car it fails to connect. Cannot connect at all with engine running first or switching from ECU to TCU. If I restart Free SSM it will again sporadically connect but immediately loose connection once something is changed. I was able to stay connected long enough to clear TCU memory but a test drive did the same thing again. Thinking it's time for a new TCU? TIA for any insights! Link to comment Share on other sites More sharing options...
08SpecB_DE Posted October 27, 2019 Share Posted October 27, 2019 Try a different scan tool. The p0607 code is related to internal memory fault so it sounds like your ecu is bad. Link to comment Share on other sites More sharing options...
Haven Posted October 30, 2019 Author Share Posted October 30, 2019 Ok so I cleaned and or replaced all the chassis grounds and added one directly to firewall from battery. No change. It there a scan tool that can assess the viability of the ECU/TCU/BIU? From what I understand the ECU can't just be swapped without matching it to the other components (immobilizer) or swapping the entire set. Anyone done this? Link to comment Share on other sites More sharing options...
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