Aux heater and generator line voltage fault codes

B

Blano

Registered User
Joined
Feb 28, 2014
Messages
7
Reaction score
1
Points
3
Location
Leeds, England, United Kingdom
Hello I've recently purchased VAGCOM from Ross-tech and did a scan. Had a couple of problems that were easily fixed but got 2 faults to do with the auxiliary heater that I can't seem to find any info on narrowing down. I know the aux heater isn't critical and I can live without it but it would be nice to know if there is a cheap fix without having to buy a new heater to test it. The scan gave these 2 fault codes

Address 08: Auto HVAC Labels: 8P0-820-043.lbl
Part No SW: 8P0 820 043 H HW: 8P0 820 043 H
Component: KlimavollautomatH17 0200
Revision: 237064 Serial number: 8P0820043H
Shop #: WSC 06314 000 00000
VCID: 31695D9AA8A66AA9D11-8064


1 Fault Found:
00483 - Control Module for Auxiliary Air Heater
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 3
Fault Frequency: 1
Reset counter: 136
Mileage: 249373 km
Time Indication: 0
Date: 2015.05.27
Time: 10:22:37


Freeze Frame:
ON


-------------------------------------------------------------------------------
Address 7D: Aux. Heat Labels: 1K0-963-235.lbl
Part No SW: 1K0 963 235 E HW: 1K0 963 235 E
Component: PTC-Element 0404
Revision: 00800000 Serial number:
Shop #: WSC 00000 000 00000
VCID: 2D5141EAB49E0E49F59-8078


1 Fault Found:
00361 - Heater Element for Auxiliary Heater (Z35)
014 - Defective


Thanks for your help, on a side not I also got this fault which won't clear either

Address 09: Cent. Elect. Labels: 8P0-907-279-23-H.lbl
Part No SW: 8P0 907 279 F HW: 8P0 907 279 F
Component: Bordnetz-SG H36 1201
Revision: 00H36000 Serial number: 00000002179560
Coding: 01884F00B214100000160000160000000008FE175C0100
Shop #: WSC 06314 000 08192
VCID: 408F085E130CF3212EF-8015


Subsystem 1 - Part No: 8P2 955 119 B Labels: 1KX-955-119.CLB
Component: Wischer AU350 H01 0130
Coding: 00062736
Shop #: WSC 06314


1 Fault Found:
01117 - Generator Terminal DF Load Signal
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 177
Mileage: 251643 km
Time Indication: 0
Date: 2015.06.14
Time: 13:44:00


Freeze Frame:
ON
Voltage: 12.10 V
ON
ON
OFF
OFF
OFF




When I go on measuring blocks the voltages look ok sat at around 14V and 12V with the engine off. There are no other symptoms either just wondered if anybody has come accross this aswel

thanks again
 
First fault is simply the electric heater which warms the car till engine temp comes up has a blown element quite common the 2nd fault may just be a bad connection on alternator or the regulator/rectifier in alternator is about to go on permanent holiday.
 
Ok thanks for your help, don't suppose you know any way of checking the regulator/ rectifier without just checking the battery Voltage is at 13.5-14.5V when above 2000rpm?
 
voltage should be same on tickover ,switch everything on, load alternator, lights ,heater heated screens everything and then bring revs upto 1500rpm and then check voltage , alternator is on full output at 1500rpm.
 
Hi, did you ever resolve this?

I have the same two fault codes. When I run an output test in VCDS the aux heater works, puts out 690 watts and I can feel hotter air, but when not running the test it will not turn on. So I know that the element is not faulty, but unsure where to check now.

Any help appreciated.
 
With regards to Zak's post, there is logic with the use of heavy loads such as the aux heater.
When first started, you might find the aux heater does not immediatly come on as the engine will be using the glow plugs for a while depending on temp to aid running, as the glow plugs pull around 70 amps, with the aux heater on as well the demand would be huge, bearing in mind you need lights demisters etc..
The aux heater only works if, outside temp is 4.5 degrees or lower, the econ mode is turned off, demand says it's ok to use it.
Maybe the fault with the alternator is causing it not to turn on??

In the op's case the car is telling you the element us blown, or you just have a bad connection somewhere..
 
I didn't realise that it was dependent on external temperature too; I was aware that econ must be off, load must be > 30% and the climate unit must be above around 21 degrees.

It was 5.0 degrees exactly on the display when I was testing the newly installed unit, so this may explain why it wasn't running aside from during output testing!

Thanks for the response.
 
You must log in or register to reply here.

Similar threads

@udi A3
Stop limit adaption.... and aux heater?
Replies
2
Views
2K
@udi A3
@udi A3
A
VCDS Fault Codes
Replies
2
Views
3K
warren_S5
warren_S5
Olly_K
  • Sticky
VCDS Fault codes . . .
Replies
3
Views
85K
David Thomas
David Thomas
P
VAG Fault Codes
Replies
2
Views
2K
pradley
P
S
Fault codes
Replies
25
Views
3K
Chillout
C
Top
Back