Conflicting error codes.
#1
Conflicting error codes.
Greetings.
'02 3500, 5.9.
I have different error codes showing up on two different PCM's.
One PCM displays a P1493 code, and the other displays a P0505 code.
What the hell could this possibly mean? The one with the P1493 code has no driveability issues, but the one with the P0505 code seems to have trouble operating the IAC motor (hence the code?). It doesn't stall, but sometimes it's slow to recover a bit after an RPM change.
Which PCM should I believe? Neither? Both? I REFUSE to pepper the problem with parts. I have enough things to spend money on without replacing parts that haven't been verified as actually being bad. Why are the PCM's not displaying the same code?
'02 3500, 5.9.
I have different error codes showing up on two different PCM's.
One PCM displays a P1493 code, and the other displays a P0505 code.
What the hell could this possibly mean? The one with the P1493 code has no driveability issues, but the one with the P0505 code seems to have trouble operating the IAC motor (hence the code?). It doesn't stall, but sometimes it's slow to recover a bit after an RPM change.
Which PCM should I believe? Neither? Both? I REFUSE to pepper the problem with parts. I have enough things to spend money on without replacing parts that haven't been verified as actually being bad. Why are the PCM's not displaying the same code?
#3