2011 A4 B8 2.0TFSI cold start issue

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Wade
Cadet
Posts: 106
Registered for: 6 years 4 months
Car Make: Audi
Car Model: A4 2.0T
Location: Hillcrest, KZN

2011 A4 B8 2.0TFSI cold start issue

Post by Wade »

Good morning all.

My A4 will do this once every now and then and is certainly not consistent at all. Sometimes I don’t start the car for 4 days and it’s fine.

Then I’ll use the car for 2 days in a row and I’ll get a very rough idle on a cold start. Engine is shaking and car is shaking. From the exhaust you can hear a miss fire or something for sure.

Goes away after 3 min or so and after that car is 100%.

I scammed the car with an OBD scanner. No engine light was on at all but got this code :

No idea on the bottom part when it mentions a bottom key not working. Is this code in anyway related to the issue I occasionally have?

Thanks everyone

Car Scanner ELM OBD2
DTC report
Selected brand: Audi
VIN: WAUZZZ8K7CA022256

============1==============
5646
Raw code: 00160E
ECU: Engine control unit
Status: Test failed, Pending, Confirmed, Test failed since last DTC clear, Test not completed during this operation cycle
Audi: B13C9FB: Multimedia system control head
Function key bottom right
Baldwin02002
Cadet
Posts: 356
Registered for: 15 years 7 months
Car Make: VW
Car Model: Mk2 GTS
Membership No: missing
Location: Mulbarton

Re: 2011 A4 B8 2.0TFSI cold start issue

Post by Baldwin02002 »

Your scanning results does not show anything. Try using a different scanner and post the results
Current:
Mk2 GTS 1.8 --> 2.0 16v MP9 --> Soon to be 2.1 16v MP9 with Throttles
S3 2003 BAM --> Stage 1 with full Exhaust
S4 2004 --> Stock
A3 2010 1.8T Cabrio --> Stock
//////
Previous
Golf Citi 2.0 8v MP9 2007
Jetta 4 V5 10V
Honda CB400 '74
chmarshall81
Enlisted
Posts: 20
Registered for: 1 year 5 months

Re: 2011 A4 B8 2.0TFSI cold start issue

Post by chmarshall81 »

Hi Wade
Did you figure out your problem?


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Wade
Cadet
Posts: 106
Registered for: 6 years 4 months
Car Make: Audi
Car Model: A4 2.0T
Location: Hillcrest, KZN

Re: 2011 A4 B8 2.0TFSI cold start issue

Post by Wade »

chmarshall81 wrote: Wed May 17, 2023 3:56 pm Hi Wade
Did you figure out your problem?


Sent from my iPhone using Tapatalk
Sorry for only seeing this now.

Yes. PCV valve was done for.

New valve and so far so good.
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