Vag-com readout misfires, abs, hvac
 

First time I hooked it up. Been getting misfires in cyl 1 and 3. Changed plugs, still misfires. I havent been able to find the cylinder order, so I'm not sure which coils to swap around. Hopefully both these cylinders run off the same coil.

ABS-rough road/engine torque signal-electrical malfunction
wheel speed sensor? How do I know which one?

Hvac-no heat comes out vents. Both coolant lines warm. Havent flushed core yet. A/C is disconnected. Given that I am getting air, I'm guessing its the temp sensor. Am I correct? Where is this?

Also the airbags are out, how do I turn the light off?

Here's the read-out-

Friday,07,March,2008,18:06:53:03604
VAG-COM Version: Release 704.1
Data version: 20071016
Chassis Type: 8D - Audi A4 B5
Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77

Mileage: 225810km/140311miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: None
Part No: 8D0 906 266 B
Component: 2,8l V6/2V MPI OBD2 D02
Coding: 01001
Shop #: WSC 06335

4 Faults Found:
18014 - Rough Road/Engine Torque Signal from ABS: Electrical Malfunction
P1606 - 92-00 - Unknown Error Elaboration
16685 - Cylinder 1: Misfire Detected
P0301 - 93-00 - Unknown Error Elaboration
16687 - Cylinder 3: Misfire Detected
P0303 - 93-00 - Unknown Error Elaboration
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 93-00 - Unknown Error Elaboration
Readiness: N/A

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8L0-820-043-2D.LBL
Part No: 8L0 820 043 B
Component: A4 KLIMAVOLLAUTOMAT_D72
Coding: 04162
Shop #: WSC 06335

3 Faults Found:
00787 - Temperature Sensor in Fresh Air intake duct (G89)
30-00 - Open or Short to Plus
00603 - Footwell/defroster Flap Positioning Motor (V85)
41-10 - Blocked or No Voltage - Intermittent
00792 - A/C Pressure Switch (F129)
29-00 - Short to Ground

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8A0-959-655.LBL
Part No: 8A0 959 655 D
Component: Airbag V AUDI D01
Coding: 00127
Shop #: WSC 06325

2 Faults Found:
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent
00595 - Crash Data Stored
35-00 - -

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8D0-919-0xx-17.LBL
Part No: 8D0 919 036
Component: B5-KOMBIINSTRUMENT D10
Coding: 00262
Shop #: WSC 08612

No fault code found.

-------------------------------------------------------------------------------
Address 35: Centr. Locks Labels: 8D0-862-257.LBL
Part No: 8LO 862 257 B
Component: CV-Pump,Alarm, RC
Coding: 12172
Shop #: WSC 65535

6 Faults Found:
01367 - Central Locking Pump Run Time Exceeded (Likely Leak)
35-00 - -
01371 - Alarm triggered by Door Contact Switch; Driver's Side
35-00 - -
01374 - Alarm triggered by Terminal 15
35-00 - -
01370 - Alarm triggered by Interior Monitoring
35-00 - -
01369 - Alarm triggered by Hood Switch
35-00 - -
01368 - Alarm triggered by Luggage Compartment Switch
35-00 - -

End --------------------------------------------------------------------------------------------------
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RE: Vag-com readout misfires, abs, hvac
 

What year A4 do you have? Im only asking that for the miss-fires.

ABS code isn't something to worry about, erase it and see if it comes back. If it does replace the IAT sensor.

For the air bags you have to install resistors in place of the airbags with close to the same resistance value.

RE: Vag-com readout misfires, abs, hvac
 

1997. Whats IAT? Im sure its not intake air temp...ha..

How would I figure out the resistance value? Im sure testing the old blown one wouldnt be right. Maybe I should just pick up one off ebay.

What do you think about the heat? I read the fresh air temp sensor is behind the glovebox and some filter? If that was bad would it give me no heat? Should I flush the core first?

Thanks for the help man.

RE: Vag-com readout misfires, abs, hvac
 

ttt

RE: Vag-com readout misfires, abs, hvac
 

The missfire is gonna be caused by the ICM (ignition control module) which sits on top of your airbox.

Yes i meant the IAT sensor, it directly reports to the ABS, ENGINE, and Transmission, it usually doesn't go bad on A4 models though.

As for the heating problem, make sure your engine is running at operating temp, then take out the battery and used compressed air to flush out the core. If that still doesn't work then there is a problem with the temp flap door which your fault code suggest. The fresh air temp sensor reports to the intrument cluster to help identify exterior temps.

RE: Vag-com readout misfires, abs, hvac
 

Thanks, just ordered an icm, flushed my core. Lot of crap came out. Heat seems to work, but it was almost 50 degrees today, however switching from cool temps to hot sure made a difference.

Not doubting you here just interested, IAT. Is it the intake air temp? What does that have to do with ABS? My rotors are warped, could that have something to do with the rough road/engine torque code?

Thanks for the help!

RE: Vag-com readout misfires, abs, hvac
 

ttt