2014 S3 multiple cylinders misfire

[Barry786]

Audi S3 S-TRONIC
Sportback
2014
16k miles

I have just owned this Audi S3 for around 2 months and it's on 16k miles. Enjoy this car very much. Yesterday after a car wash, setting off from traffic lights the car started to judder and the EML was blinking, I pulled up on the side switched the car off and on, everything was back to normal no juddering and no EML.
Car usually drives and pulls in every gear with no hesitation and also starts without any problems.

Quite suprised i'm getting engine problems at 16k miles.

Now i've heard cylinder misfire can be caused by several things such as spark plugs, coils, injectors and so on. I don't want to be replacing everything, can anybody point me in the right direction with the fault codes below.

Spoiler: Scan result

Chassis Type: 8V-AU37 (5Q0)

Address 01: Engine (J623-CJXC) Labels:. 06K-907-425-V1.clb
Part No SW: 8V0 906 259 HW: 06K 907 425 A
Component: 2.0l R4 TFSI H09 0006
Revision: --H09---
Coding: 0A1D00322426010B2004
Shop #: WSC 06314 790 00021
ASAM Dataset: EV_ECM20TFS0218V0906259 001008
ROD: EV_ECM20TFS0218V0906259.rod
VCID: 7DF1819EEC109DAC73-8028

8 Faults Found:
17178 - Databus
U1123 00 [032] - Received Error Message
Intermittent - Not Confirmed - Tested Since Memory Clear

15290 - Output for Starter Relay
P0616 00 [032] - Short to Ground
Intermittent - Not Confirmed - Tested Since Memory Clear

15294 - Control Circuit for Starter Relay 2
P3048 00 [032] - Short to Ground
Intermittent - Not Confirmed - Tested Since Memory Clear

15125 - Cylinder 1
P0301 00 [096] - Misfire Detected
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 26441 km
Date: 2019.02.25
Time: 13:40:59

Engine speed: 1517.50 /min
Normed load value: 18.0 %
Vehicle speed: 28 km/h
Coolant temperature: 105 °C
Intake air temperature: 60 °C
Ambient air pressure: 1020 mbar
Voltage terminal 30: 13.886 V
Unlearning counter according OBD: 40
Engine: operating status: PL
N_TOOTH: 1514 /min
T_AST_SAE: 3158 s
TOIL: 103 °C
STATE_LS_SAE[1]: CL
FUP_H_SAE: 11590.0 kPa
FUP_EFP_MES: 5293.45 hPa

15128 - Cylinder 2
P0302 00 [096] - Misfire Detected
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 26441 km
Date: 2019.02.25
Time: 13:40:59

Engine speed: 1517.50 /min
Normed load value: 18.0 %
Vehicle speed: 28 km/h
Coolant temperature: 105 °C
Intake air temperature: 60 °C
Ambient air pressure: 1020 mbar
Voltage terminal 30: 13.886 V
Unlearning counter according OBD: 40
Engine: operating status: PL
N_TOOTH: 1514 /min
T_AST_SAE: 3158 s
TOIL: 103 °C
STATE_LS_SAE[1]: CL
FUP_H_SAE: 11590.0 kPa
FUP_EFP_MES: 5293.45 hPa

15137 - Random/Multiple Cylinder Misfire Detected
P0300 00 [096] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 26441 km
Date: 2019.02.25
Time: 13:40:59

Engine speed: 1517.50 /min
Normed load value: 18.0 %
Vehicle speed: 28 km/h
Coolant temperature: 105 °C
Intake air temperature: 60 °C
Ambient air pressure: 1020 mbar
Voltage terminal 30: 13.886 V
Unlearning counter according OBD: 40
Engine: operating status: PL
N_TOOTH: 1514 /min
T_AST_SAE: 3158 s
TOIL: 103 °C
STATE_LS_SAE[1]: CL
FUP_H_SAE: 11590.0 kPa
FUP_EFP_MES: 5293.45 hPa

15102 - MAP/MAF <-> Throttle Position Correlation
P0068 00 [096] - -
Intermittent - Not Confirmed - Tested Since Memory Clear

15094 - MAP/MAF <-> Throttle Position Correlation
P0068 00 [096] - -
Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0000 0000

 

[neoalius]

Did it happened afterward too. Did you washed the engine bay. Was it a pressure washer.

Cheers
Neo


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[Barry786]

Did it happened afterward too. Did you washed the engine bay. Was it a pressure washer.

Cheers
Neo


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It was just a one off, never happened again.
No engine bay wash, just a simple exterior wash with a pressure washer.
Thanks

 

[neoalius]

It looks like more of moisture issue...on connectors. Try figuring out how you washed and what can hold water(connectors).

I hope the clear code/freeze farms are cleared . If not clear them and enjoy your car.

Cheers
Neo



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[Barry786]

It looks like more of moisture issue...on connectors. Try figuring out how you washed and what can hold water(connectors).

I hope the clear code/freeze farms are cleared . If not clear them and enjoy your car.

Cheers
Neo



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Thanks will do that

 

[neoalius]

Looks like there are the culprit....Check starter relay area/wiring connectors.

15290 - Output for Starter Relay
P0616 00 [032] - Short to Ground
Intermittent - Not Confirmed - Tested Since Memory Clear

15294 - Control Circuit for Starter Relay 2
P3048 00 [032] - Short to Ground
Intermittent - Not Confirmed - Tested Since Memory Clear


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[Barry786]

Looks like there are the culprit....Check starter relay area/wiring connectors.

15290 - Output for Starter Relay
P0616 00 [032] - Short to Ground
Intermittent - Not Confirmed - Tested Since Memory Clear

15294 - Control Circuit for Starter Relay 2
P3048 00 [032] - Short to Ground
Intermittent - Not Confirmed - Tested Since Memory Clear


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Any ideas where the starter relay area is?
Thanks

 

[neoalius]

No Mate. I’ve got SQ5 so no idea. Google it

Cheers


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[RichardT]

Presumably still under warranty? Get it checked out by the dealer.

 

[Barry786]

Presumably still under warranty? Get it checked out by the dealer.

Warranty expired in March 2018.
Unless they take a look at it and pay for half of the repair job as a gesture of goodwill since it's a low miler.

 

[RichardT]

Crikey - that is low mileage.
I think you said that it only happened once and is now fine with no side effects?
If so I would be tempted to ignore it and just mention it when it next goes in for service. You should be servicing it annually with low mileage.

 

[Barry786]

Took a look around the relay connectors and any signs of water inside the engine bay, everything's dry as a bone.
Cleared the fault codes and no fault codes to show anymore.
Will update if anything does or does not show up after a week.

 

[pop80_uk]

Is the cover for the engine relays / fuses on properly? It sounds to me like some water has got in there from your wash and is causing a short

 

[Barry786]

Is the cover for the engine relays / fuses on properly? It sounds to me like some water has got in there from your wash and is causing a short

Cover for the engine relay was on properly, was actually a pain to take off if anything lol as one side didn't want to release.
Looked around and pushed in the relays and fuses just to be sure. Looked fine to me.

 

[Barry786]

Quick update
No misfires soo far and no fault codes to show yet.
Just waiting for another misfire (if it happens) and I will then consider replacing the spark plugs and coil packs, as i've heard they're quite common to fail on these engines.

 

[neoalius]

You must not have any more dramas.

Random misfire will never happen due to coils/spark plugs. A static misfire can be resolved by changing one of or both.

Change your spark plugs as per manual. That should be good.


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[Damo S]

Intake air temp of 60 degrees seems a bit high. I'm assuming the car was sat with engine running for sometime.