List of error codes - ask for guidance/spoonfeeding

O

Olerype

Member
The 2000-model 1.4 AUA (29kmiles) throws the following error-codes. All, except for HVAC, can be cleared, but at least the ABS brakes codes comes back within 1 hour of driving with three lights in dash followed with 3 beeps (if the other error-codes come back has not been checked yet). Expect the engine error-code to come back as the car sometimes is slightly "hunting" on idle.

I will certainly investigate the error-codes myself, but just curios if someone have seen these error-codes themself and can give me a "flying" start how to eliminate.

1) the engine error can be due to various reasons (there is no engine-light on in dash); any tip where to start?
2) the ABS error is as per my understanding most likely brake-servo (and most expensive fault)
3) how is access to rectify the HVAC?

Address 01: Engine Labels: 036-906-034-APE.lbl
Part No: 036 906 034 Q
Component: MARELLI 4LV 3415
Coding: 00051
Shop #: WSC 02138
VCID: 204FB705A0FD864407-4B32
WAUZZZ8ZZ1N005782 AUZ7Z0Y1486671
1 Fault Found:
17559 - Long Term Fuel Trim Additive Air; Bank 1; Range 1
P1151 - 35-00 - System too Lean
Readiness: 0000 0000
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8Z0-907-379-MK20.lbl
Part No: 8Z0 907 379 A
Component: ESP 20 CAN V008
Coding: 10758
Shop #: WSC 02154
VCID: 4683019D629988745D-4AE8
2 Faults Found:
01435 - Brake Pressure Sensor 1 (G201)
57-00 - Electric Circuit Failure
00810 - Sensor 1/2 for Brake Pressure
27-10 - Implausible Signal - Intermittent
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: None
Part No: 8Z0 820 043 A
Component: A2-KLIMAVOLLAUTOMAT 0406
VCID: 34674B5504050AE4F3-2580
2 Faults Found:
00710 - Defroster Flap Positioning Motor (V107)
41-10 - Blocked or No Voltage - Intermittent
00818 - Sensor for Evaporator Outlet Temperature (G263)
30-00 - Open or Short to Plus
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8Z0-959-655.lbl
Part No: 8Z0 959 655 E
Component: Airbag Front+Seite 3004
Coding: 00102
Shop #: WSC 02138
VCID: 4E9339BD8AE94034E5-515E
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8Z0-920-xxx-17.lbl
Part No: 8Z0 920 900 G
Component: W1-KOMBIINSTR. VDO D12
Coding: 05142
Shop #: WSC 00186
VCID: 3D716E71374FCBAC0C-5140
WAUZZZ8ZZ1N005782 AUZ7Z0Y1486671
1 Fault Found:
01336 - Company Data Bus for Comfort System
80-10 - Single-Wire Operation - Intermittent
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels:
VCID: 55A1D6D1AC3F33EC24-4B00
Note: Excessive Comm Errors
 
The engine code is almost certainly an air leak. The long term fuel trim as maxed out on fuel and still the sensor is saying the engine is running lean. Or it could be a faulty O2 sensor but most likely an air leak


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depronman said:
The engine code is almost certainly an air leak. The long term fuel trim as maxed out on fuel and still the sensor is saying the engine is running lean. Or it could be a faulty O2 sensor but most likely an air leak


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Click to expand...

Aha; so the first error says that ECU has maxed out fuel (injection) while the other errorcode says that engine is still running lean? Had a short drive with the car now; no lights in dash and no hunting on idle. However, when cold there is slighty exhaust-smoke when rev’ing.

May I ask which hoses(?) to check for airleaks?
 
Olerype said:
Aha; so the first error says that ECU has maxed out fuel (injection) while the other errorcode says that engine is still running lean? Had a short drive with the car now; no lights in dash and no hunting on idle. However, when cold there is slighty exhaust-smoke when rev’ing.

May I ask which hoses(?) to check for airleaks?
Click to expand...

Any and all I’m afraid. Well actually anything from the throttle butterfly to the cylinder head including the inlet manifold gasket


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See there is a thin oil film on the air-intake just above the throttle-housing. Could this be the oil-separator?

Has anyone replaced that on the 1.4 AUA petrol? Dealership is at £300.
 
depronman said:
The engine code is almost certainly an air leak. The long term fuel trim as maxed out on fuel and still the sensor is saying the engine is running lean. Or it could be a faulty O2 sensor but most likely an air leak


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Click to expand...
It is a LONG shot, but make sure that the oil filler cap is on correctly and properly sealed, if the cap is taken off or has a leaky seal, the engine will "hunt" and you will get errors such as that (if you wonder why I am saying that just try removing the oil filler cap with the engine running and see how it causes issues)

A long shot as I say, but a free check at least and an easy fix if that is part of the cause.

Steve B
 
Will do that! Another tip is to use startgas while running to see if the engine suck false air somewhere.

Here some photos of the air intake above the presumed throttle body(?)

0CB009AD-3871-451D-BE5F-41FDECEDC780.jpeg


3C312297-AB6C-4C1A-9EDE-D07C83F11222.jpeg


AD97615C-87C8-432D-A5E5-3AB83087F1EB.jpeg
 
that is the throttle body. THe seperator is far further down and on the back of teh engine.
THat level of oil film shouldn't be there.

- Bret
 
Removing the oil cap cause engine to run uneven, so assume this is ok.

There is a hose behind the air intake that has been subject to chafing, see photo, but was unable to verify if the hose was leaking while engine was running (there is at least two spots).

52E5A278-246E-43FA-97E3-962ADE1726D5.jpeg


From the first drawing, the hose is circled as «38»:
F7776385-D958-465A-B9E0-BF8083DEB2F0.jpeg


Is this further connected to the oil separator «19» by the hose «35» and circled as «29» (the clip)?
0299F97F-AD9A-48F6-9577-5530D2CF96D8.jpeg


From where else can the oil film come from?
 
Last edited:
that is the crankcase breather. It goes out to a charcoal filter, I believe.

29 is the clip. The separator is 19.
I would personally take off the throttle body and clean it, and replace that hose. And work from there.

- Bret
 
Edited the post; hose «35» by the clip «29».

But is my understanding correct; the separator is connected to the throttle body? And this is the source of oil film on the throttlebody as well as engine light on? See faultcode in first post.
 
Thanks again; dealership takes £300 for a new separator installed. Part is about £40 (FEBI).

Access must be from below right? No oil will leak when replacing?
 
i changed oil at the same time. no point not doing it. Shouldn't leak if you've not tilted the car backwards. And it is from below, it's quite simple. I remember arguing with something, but it still took 90 minutes to do everything.

- Bret
 
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