B101804 Rear Side Airbag Crash Sensor (on driver side) Defective

Audi-12332!

New Member
Hello,

I'm new to the website/forum. Recently purchased a Audi a3 8v 2014 and I've got an issue with my airbag light. I took it to a garage and they ran diagnostics and got the following code - B101804. Something to do with driver side 2nd row sensor?
Didn't get much else information from the garage apart from the code.
Used Carista to get the following codes:
P2002 - Diesel Particulate filter. Efficiency below threshold - but its only holding about 20g of soot at the moment.
19226 - not to sure what this is
B101804 Rear Side Airbag Crash Sensor (on driver side) Defective - if someone can guide with this itll be fantastic.
 

davethaboss

Registered User
Hello,

I'm new to the website/forum. Recently purchased a Audi a3 8v 2014 and I've got an issue with my airbag light. I took it to a garage and they ran diagnostics and got the following code - B101804. Something to do with driver side 2nd row sensor?
Didn't get much else information from the garage apart from the code.
Used Carista to get the following codes:
P2002 - Diesel Particulate filter. Efficiency below threshold - but its only holding about 20g of soot at the moment.
19226 - not to sure what this is
B101804 Rear Side Airbag Crash Sensor (on driver side) Defective - if someone can guide with this itll be fantastic.
So I had this fault awhile ago.

It was a different code though.

The airbag sensor is located to the right and left of the rear seats. The plastic trim where the seatbelt comes out of [the front piece, I can show it WAY more clearly later if you like].

I am sure you have tried clearing the code and it hasn't worked.

First do a hardware check like the one I have attached to this message.

If all else fails and the sensor is confirmed to be faulty it can be replaced pretty easily. I doubt it's faulty though. Very rarely do critical sensors like that fail out of the blue. I'm sure something else is going on.
media_5ca3b3f91ac693.41454250.jpg
media_5ca7be458757f7.00355173.jpg


Sent from my LM-G710VM using Tapatalk
 

Audi-12332!

New Member
So I had this fault awhile ago.

It was a different code though.

The airbag sensor is located to the right and left of the rear seats. The plastic trim where the seatbelt comes out of [the front piece, I can show it WAY more clearly later if you like].

I am sure you have tried clearing the code and it hasn't worked.

First do a hardware check like the one I have attached to this message.

If all else fails and the sensor is confirmed to be faulty it can be replaced pretty easily. I doubt it's faulty though. Very rarely do critical sensors like that fail out of the blue. I'm sure something else is going on. View attachment 213154 View attachment 213155

Sent from myLM-G710VM using Tapatalk
Hi, Thanks for replying.
Yes, When clearing the fault it comes back immediately and yeah if you can show me/ explain how to check the sensor thatll be great as im not experienced with cars and diagnostics.
How would I conduct the hardware check, I've got carista but the code I got for airbags using that was useless.
 

Audi-12332!

New Member
So I had this fault awhile ago.

It was a different code though.

The airbag sensor is located to the right and left of the rear seats. The plastic trim where the seatbelt comes out of [the front piece, I can show it WAY more clearly later if you like].

I am sure you have tried clearing the code and it hasn't worked.

First do a hardware check like the one I have attached to this message.

If all else fails and the sensor is confirmed to be faulty it can be replaced pretty easily. I doubt it's faulty though. Very rarely do critical sensors like that fail out of the blue. I'm sure something else is going on. View attachment 213154 View attachment 213155

Sent from my LM-G710VM using Tapatalk

I have done the hardware check:

CAN network gateway
Part #: 5Q0907530T
Component: GW MQB High
Software version: 1188
ASAM/ODX identifier: EV_GatewLear
Coding: 030100040F0876005B000248080B00000001010000000000000000000000 (hex)
[No fault codes]

Central electronics
Part #: 5Q0937084AJ
Component: BCM MQBAB H
Software version: 0134
ASAM/ODX identifier: EV_BCMCONTI
Coding: 07040A42C24120DD03844004B31C07A80000000000000000000000000000 (hex)
[No fault codes]

Steering wheel
Part #: 8V0953521BM
Component: Lenks. Modul
Software version: 0110
ASAM/ODX identifier: EV_SMLSKLOMQB
Coding: 8408 (hex)
[No fault codes]

Airbags
Part #: 5Q0959655N
Component: AirbagVW20
Software version: 0361
ASAM/ODX identifier: EV_AirbaVW20SMEVW37X
Coding: 98CCC0000C0000005C5400CA00C800000065 (hex)
Fault codes: 9443332 Manufacturer-specific code

Instrument cluster
Part #: 8V0920971E
Component: KOMBI
Software version: 4291
ASAM/ODX identifier: EV_DashBoardVDDMQBAB
Coding: 67850A002B8026000100BA001000000000000000 (hex)
[No fault codes]

ABS
Part #: 5Q0907379L
Component: ESC
Software version: 0471
ASAM/ODX identifier: EV_Brake1UDSContiMK100IPB
Coding: 12F18AA224240A6C0180060541C42548512450806082A4F2004100788608 (hex)
[No fault codes]

Power steering
Part #: 5Q0909144P
Component: EPS_MQB_ZFLS
Software version: 1043
ASAM/ODX identifier: EV_SteerAssisMQB
Coding: 8103 (hex)
[No fault codes]

Heater & air conditioning
Part #: 8V0820043C
Component: AC Automat
Software version: 0052
ASAM/ODX identifier: EV_AirCondiFrontVaAU37X
Coding: 03100104002000011000000000001100 (hex)
[No fault codes]

Front passenger's door
Part #: 5Q0959592B
Component: TSG BFS
Software version: 0025
ASAM/ODX identifier: EV_DCUPasseSideEWMAXKLO
Coding: 001086204C01040000001002 (hex)
[No fault codes]

Driver's door
Part #: 5Q0959593B
Component: TSG FS
Software version: 0025
ASAM/ODX identifier: EV_DCUDriveSideEWMAXKLO
Coding: 00108E200001040000001002 (hex)
[No fault codes]

Headlight aiming
Part #: 5Q0907357
Component: LWR-ECU
Software version: 0080
ASAM/ODX identifier: EV_HeadlRegulVWLWRMQB
Coding: 018C000001000000 (hex)
Fault codes:
5256725 Manufacturer-specific code

Engine
Part #: 04L906021AQ
Component: R4 1.6l TDI
Software version: 9229
ASAM/ODX identifier: EV_ECM16TDI01104L906021AQ
Coding: 02190012030501092000 (hex)
[No fault codes]

Infotainment system
Part #: 8V0035874B
Component: MU-S-ND-ER
Software version: 0420
ASAM/ODX identifier: EV_MUStd4CPASE
Coding: 01730301FF00000021111101000A00002F0001460100010006 (hex)
[No fault codes]
 
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