I have a 94 850 turbo, it has an OBDII port in the console. I took the car to auto zone and had the codes read, no codes. From what I understand the OBDII port only reads engine codes...? I read the codes from the OBDI port under the hood and got some out of A2, A3, and A7...but can not get any codes out of A6. Is this because those codes are read through the OBDII port? Or is there something wrong? Also, there is no CEL light that comes on....not even when the car is off and in posistion II. Bulb burnt out? I've never seen it come on.

Also, one more question unrelated to codes....I just did a complete PCV system replace and have no smoke out of the dipstick and idle, but seem to get almost a steam out of it when revved up. Is this normal? I did everything...from cleaning the ports in the block to making sure the PTC was spottless.

Thanks for any help, Joe