1G ECU error codes 12, 13, 25, 31 & 41

[albert]

Ok here goes... The car had an engine swap but unfortunately, the turbo was bad and dumped oil into the intercooler. This is another case of a dead turbo and white smoke was coming out of the tail pipe but after the turbo was replaced the smoke was gone. But now, after about 3-5 minutes of driving, the CEL goes on. The ECU is throwing the following codes: 12, 13, 25, 31 & 41. I believe codes 12, 13, & 25 are maf related, 31 is the knock sensor and 41 is the injector error. Boost is only around 7psi and timing is being pulled back causing the car to loose power. I'm wondering what's causing the ECU to throw these codes. Is it possible that the oil reached the MAF and fouled the sensors? I'm also thinking its either wiring or ecu related... Thanks in advance!

 

[steve]

Clear the codes and see if they come back.
Pull the ECU make make sure it's not suffering from capacitor leakage.
Make sure that the sensor ground isn't blown.

When you have a Knock sensor CEL the ECU is going to retard the timing all the time.
Figure out which injector is bad by disabling the injectors with the scantool or datalogger or pulling spack plug wires to see which maks no difference when off/disconnected.

Steve

 

[albert]

Thanks for the advice Steve. I'm just helping a friend figure out what's wrong with his car. I'll check the ECU for signs of caps leakage and also for sensors ground trace as soon as possible...