Guys, I have a S14 SR20det having problem with rough idling and running extremely rich.The ECU spits out code 54 which is Signal circuit from Automatic Transmissioncontrol unit to Ecu.But I have a manual transmission! I had to confirm the code 3 times and I stillcan't believe it! Could it be the previous owners did a auto to manual swap and left some wiringloose?Do I need to fix the error code?
