Had ECU replaced due to short, dreaded P0601 code.
Left dealer with CEL code P0325 knock sensor 1 circuit malfunction bank 1 or single sensor. Dealer wanted to charge me another $450 for a knock sensor that doesn't exist.
Now has codes P1351 ignition coil control circuit high voltage, P1352 ic output high/pulse detected when gnd cyl 2, p1353 same cyl. 3, and p1354 same cyl. 4.
Replaced plugs, coils and exhaust gas control (t-shaped unit on right of engine.) - all the parts I'm aware of that contribute to knock sensing. Still no boost, still same codes. Boost meter on dash shows boost going up to halfway, but I don't feel or hear anything.
Any ideas where to look next? Dealership is no use - they say the problem was there before the ECU swap and not their problem.
Sounds to me like they put the wrong ECU in?? ha but it shouldn't work at all if that were the case....
This shouldn't cause the code, but have you checked for boost leaks? Also have you tried clearing the codes and resetting the battery? Sounds like they didn't marry the ECU properly to me.
reset codes, cleared battery. Checked for vac leaks. I would think if boost control it would throw codes for that. Haven't inspected blowoff valve yet. It's got to be something related to installing the new ECU - knocked off vac line or disconnected something, but I'm at a loss.
Ehhaust ionization module-yeah, that's the thing I couldn't remember the name of...it's been replaced with a known good one.
On a whim, I took the new one off yesterday to check connections. The numbers on the new one and old aren't the same. Do the parts need to be identical? I "assumed" the dealership would order and install the correct part. Bottom in pic is new, top original
Hi, I know this is an old thread but am curious if you ever resolved the problem, and how? I have the same exact symptoms after changing the ecu on my 9-3.
Hi, I know this is an old thread but am curious if you ever resolved the problem, and how? I have the same exact symptoms after changing the ecu on my 9-3.
what engine software does tech2 say is on the ecu..there are 3 engine software maps for the 2.0 9-3,depending on the last digit of your engine code,B207E,B207L or B207R.they should have asked you before shippng the ecu which of those engine codes you have..
I will check with them later today to see what software they installed. When I sent it in they asked for the VIN number of the car, would the software information show up by the VIN?
Hello, in my case it appears the wrong ecu was installed, I sent my ecu in and received the same part number I originally had. the cel still remains on and I still show a couple of codes P0300 and P0325 But the drivability is pretty good and no smoke, so I just learned to deal with it.
Thanks. I was able to find one that came from the exact same model as my car, different part number from my original one though, but it works perfectly now. I guess I can't use one from another year.
However, I read about SPS Programming, that is supposed to wipe the ECM completely, which should remove the previous engine software, and be reflashed to the current engine you are putting it on. But the dealership said they can't reprogram ECMs. So I don't know if they just wanted me to buy one from them for 800+ or if they truly can't. But It works now and hopefully no P0601 code.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
SaabCentral Forums
3M posts
119.2K members
Since 2001
SaabCentral forum the most comprehensive Saab resource on the internet. Join our discussions on the Saab 9-3, Saab 9-5, Saab 900, Saab 9000 and all other Saab models, choose your forum.