Diagnosis..... Several error codes: abs,airbag,ecm

Alex dark

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I had massive problems with my a4 b7 2.0tdi 140 early on , head was cracked , egr cooler cracked, oil pump was fudged and the tandem pump failed.

All sorted now , but stuck with a very intermittent starting issue. Used to do this every few days , but last did it 6 weeks ago before today. I'm assuming it's to do with the following error codes:

Address 17:

01314- engine control module
004 no signal / communication - intermittent.

01316- abs control module
004 no signal / communication - intermittent.

01314- control module for airbags (j234)
004 no signal / communication - intermittent.

According to Ross-tech it's likely to be a connection somewhere , does anyone have any idea where / what to check ?
 
Also, how old is the battery? I've had similar random weirdness before and it was down to battery near end of life. Just worth a thought.
 
Battery was replaced with a Yuasa unit around 3 months ago due to the old one dying from being stood around too long, so shouldnt be that.

Autoscan below:



Chassis Type: 8E - Audi A4 B6

Scan: 01,02,03,08,09,15,16,17,26,36,37,45,46,55,56,63,76



Address 08 -------------------------------------------------------

Controller: 8E0 820 043 AL

Component: A4 Klimaautomat 2731

Coding: 00000

Shop #: WSC 00000

3 Faults Found:

00727 - Potentiometer in Positioning Motor for Defrost Flap (G135)

30-00 - Open or Short to B+

00727 - Potentiometer in Positioning Motor for Defrost Flap (G135)

09-00 - Adaptation Limit Surpassed

00819 - High Pressure Sensor (G65)

07-10 - Signal to Low - Intermittent


Address 09 -------------------------------------------------------

Controller: 8E0 907 279 K

Component: int. Lastmodul ECE 0304

Coding: 10001

Shop #: WSC 06325

No fault code found.


Skipping Address 15-Airbags


Address 16 -------------------------------------------------------

Controller: 8E0 953 549 Q

Component: Lenksáulenmodul 0701

Coding: 00012

Shop #: WSC 06335

2 Faults Found:

01794 - Control Module Incorrect Chassis (VIN) Number

35-00 - -

01044 - Control Module Incorrectly Coded

35-00 - -


Address 17 -------------------------------------------------------

Controller: 8E0 920 950 S

Component: KOMBI+WFS 4 H12 0040

Coding: 0006441

Shop #: WSC 00046

3 Faults Found:

01314 - Engine Control Module

004 - No Signal/Communication - Intermittent

01316 - ABS Control Module

004 - No Signal/Communication - Intermittent

01321 - Control Module for Airbags (J234)

004 - No Signal/Communication - Intermittent


Address 45 -------------------------------------------------------

Controller: 8E0 951 177

Component: Innenraumueberw. 0804

Coding: 00001

Shop #: WSC 00000

No fault code found.


Address 46 -------------------------------------------------------

Controller: 8E0 959 433 BM

Component: Komfortgerát T3B 2431

Coding: 08187

Shop #: WSC 06325

2 Faults Found:

01370 - Alarm triggered by Interior Monitoring

35-00 - -

01371 - Alarm triggered by Door Contact Switch: Driver's Side

35-00 - -


Address 56 -------------------------------------------------------

Controller: 8E0 035 195 M

Component: symphony II PM6 0410

Coding: 01201

Shop #: WSC 00256

No fault code found.


Address 76 -------------------------------------------------------

Controller: 8E0 919 283 B

Component: Parkhilfe 4-Kan H06 0020

Coding: 0000114

Shop #: WSC 131071

2 Faults Found:

01548 - Sensor for Parking Aid: Rear Right (G206)

009 - Open or Short to Ground

01543 - Parking Aid Warning Chime (H15)

009 - Open or Short to Ground


End -------------------------------------------------------
 
Car has now decided it only wants to run on 3 cyls. Can someone help me connect to the ecm so I can check injector values please ? :)
 

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