SICKBIRD

Its Says "maf Or Vaf Circuit Low Input"
"1-4 Upshift Solenoid Circuit Malfunction'

Does Anybody Know What They Are?

SICKBIRD

Ttttttttttt

7camaro7

iTrader: (15)

no need opening a new thread.

I have this same EXACT problem. Happened after autocross.

Any new knowledge 10 years later?

I have a feeling a wire burnt and/or shorted out somewhere. Things don't look too bad though... Maybe an 02sim is freaking out?

2xLS1

iTrader: (25)

Probably a blown ENG SEN fuse. Find the short that made it blow. Fuses don't blow for no reason. That circuit powers all 4 O2 sensor heaters, the MAF sensor, the skip shift solenoid and the reverse inhibit solenoid.

7camaro7

iTrader: (15)

Yea, I found the blown fuse. I swapped in a fresh one. Got under the car and found a mostly melted wire-loom. I took all that remained of it off. I saw a few wires at my O2 sensors that had a ever so slight twinkle of wire peeking through. I separated them and electrical taped the hell out of them up and out of the way of the headers. SES light is still on.

#1 What gives?

#2 Where are the associated resisters located?

7camaro7

iTrader: (15)

Anybody?

Jennifur

Ever get a fix for this? I have the same issue
Both PO-102 and PO-803 Service Engine Light On with both codes. So I swapped the Engine Sensor Fuse and took car out for a ride to the store, about 10 or so minutes boom SES light back on again. So I am going to go look for melted wires by the O2 Sensors and see if anything there, or the main ground connection terminal under the car by the engine mount is goobered up and melted or just disconnected or corroded or something. If that all checks out, I dunno what else to look for and a MAF sensor is not exactly cheap especially if that is NOT the problem which in this case I doubt because the 803 code is there as well indicating a ground issue with the circuits. Fingers crossed I get this solved without any major surgery and expenses.
Thanks.

Jenni