badboybill88

So new development...it's fixed...there was a lot of corrosion in the air pump solenoid / pressure sensor and it shorted out...crazy how a sensor can completely disable a ECU and make the car completely undriveable. Anyways, unplugged it, and the bloody thing started working. Thanks gents for all your help!

Yes, it was already at the dealer, but they couldn't establish communication to either of the ECUs, similar to the scan tool. They have no issue with reprogramming a used ECM, they just need the VIN number of the car it came off of...and of course they will charge for the reprogramming, and there is no warranty on it. Both ECUs the original from my car and the used ones show similar symptoms...but of course we've never seen the used one working, so we don't know if does. It's also possible that the car fried the used ECU the same as the original, however probable that is.

- Battery is good. I have tested the voltage, and tried a different battery.

- My understanding is that you can swap the ECM with another and the car will start and run. It would just need to be reprogrammed for the anti-theft/door locks. - I did look up the code before it died. It's a generic code that basically means it could be anything electrical. As identified here; https://www.obd-codes.com/p0607 - I bought the car new and have had it ever since. Car worked great. Had a CEL for the past 4 years, had it looked at, was caused by a bad sensor, but Subaru assured me there was no concern.

I have a 2006 Subaru Impreza WRX. A few weeks ago, it was running fine and then a few minutes later went into a limp-home mode and wouldn't rev over 2000 RPMs. When I connected up a code scan tool, it was initially providing the error code; P0607 - Control Module Performance. Then awhile later I connected it back up to the car, but the ECM was now unresponsive with scan tool. So I brought it to my mechanic, - Found and put in another used ECM and still no start and no communication with scan tool. - Re-checked all power and grounds for ECM still good, even followed wiring to their source at power or ground. - ECM still not firing injectors or ignition coils. - My mechanic then brought it Subaru, and they connected it up to their laptop, but still no communication. Recommendation is to buy a new ECM and replace it, or to have another go at the engine harness and either repair or replace it. What do you think?