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Discussion Starter #1
Hi all,
Hoping someone can help me make sense of fault code readings from ABS system of Alfa 156 2.0 1999.
Used Unidiag kwp71 software, connected pin 7 to 1 in obd interface and used 'auto' setting as recommended and set ECU setting to 0x20.

First fault code reading I got was:

Read diagnostic faultcodes :
Bytes received: 08 00 01 F1 14
DTC: 0x08 = 8
state : 0
type : 0x00 unknown
condition1 : 0x01
condition2 : 0xF1
counter : 0x14

Cleared faultcodes and took for short spin and ABS light returned.
Read faultcodes again:

Read diagnostic faultcodes :
Bytes received: 08 00 01 F4 14
DTC: 0x08 = 8
state : 0
type : 0x00 unknown
condition1 : 0x01
condition2 : 0xF4
counter : 0x14

Am I right in thinking the fault code is 8??... as dosen't correspond with ABS fault code info I could find.
Obviously something wrong but don't know how to make sense of data.
Have spent a few hours reading posts but still none the wiser so decided to start new thread. Would appreciate any help,
Thanks.
 

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Discussion Starter #4
Can confirm DTC is the fault code.
Finally found comprehensive list of of ABS fault codes for 156 '99.
Will list them here for reference:

X=0x05 Valve relay
> > X=0x06 Incorrect number of teeth on phonic wheel
> > X=0x08 Front LH speed sensor not feasible.
> > X=0x09 Front LH speed sensor in O.C.
> > X=0x0A Front RH speed sensor not feasible.
> > X=0x0B Front RH speed sensor in O.C.
> > X=0x0C Rear LH speed sensor not feasible.
> > X=0x0D Rear LH speed sensor in O.C.
> > X=0x0E Rear RH speed sensor not feasible.
> > X=0x0F Rear RH speed sensor in O.C.
> > X=0x10 Battery voltage
12-diagnosis - Start / End (Starts / Ends with the diagnosis)
> > > > 14- Rear RH speed sensor not feasible.
> > > > 16-valve defect magnetic front LH /
> > > > 17-valve defect magnetic front RH /
> > > > 18-magnetic valve defect behind
> > > > 19-defective safety valve relay
> > > > 25-False Übetragungstaktung-gear wheel defektr
> > > > 26-magnetic valve defect behind LH
> > > > 27-magnetic valve defect behind RH
> > > > 28-defect discharge valve Magne front RH
> > > > 29-defect discharge valve Magne front LH
> > > > 31-defect discharge valve Magne rear LH
> > > > 32-defect discharge valve Magne rear RH
> > > > 35-pump defects Rückforderpumpe Relaikreis
> > > > 37-Broken Bremslichtschalter
> > > > 39-Broken Vordersensor LH
> > > > 41-Vordersensor not connected LH
> > > > 42-Broken Vordersensor RH
> > > > 43-Vordersensor not connected RH
> > > > 44-Broken rear sensor LH
> > > > 45-Behind sensor is not connected LH
> > > > 46-Broken rear sensor RH
> > > > 47-back sensor is not connected RH
> > > > 48-battery voltage is not okay
> > > > 55-defect control unit
> > > > 56-reading with "ausblinken" failed
> > > > 74-lot impact on warning in the instrument block
 

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Why dont you try Fiat ECU Scanner? It is much better than Unidiag, and has detailed descriptions of the ECU error codes...
 
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