An oh S*** moment, epc light on, cil flashing, car running on hardly no cylinders.

[toothofwar]

I apologize ahead of time, this is a long one.

Car info first.
2018 Golf R, unironic dp, ic, stage 2 ecu And tcu tune. E20 fuel.

Getting on the parkway today. In right lane, traffic was slow. Had an open left lane, so I merged left and got after it. Started at 50ish mph. At around 80ish (I think, wasn't really paying attention, was watching traffic in right lane), things went south fast. Car fell flat on its face, EPC and CIL came on, CIL was flashing. Car barely running and shuttering. I pull off on the next exit and limped it to a parking lot. Placed car in park and let it idle for just a few seconds. Violently shaking and spluttering. I shut the car off and pop the hood. No leaks, no rod hanging out of the block, everything looked normal. Checked fluids, all is in normal operating levels. At this point I remember my obd11 in the glove box. Run a full scan. There is some bs leftover faults from a month or 2 ago, but the ones from today scared the s*** out of me.

Hide cylinder P130a00
Cylinder 1, cylinder 2, cylinder 3, and cylinder 4 misfire.
Random/ multiple cylinder misfire.

I do not clear the codes and download the log. The log shows no active faults. So I start the car and there is no epc and cil. Car purs like a kitten. I'm at a loss. Drove the car the 100 miles home with no problems. I get home and re scan the car to look closer at the codes. Attached is all the info I could pull.

 

[toothofwar]

OBDeleven data log Date: 2020-12-23 12:57 VIN: WVWVF7AU1JW071592 Car: Volkswagen Golf R Year: 2018 Body type: 5-dr hatchback Engine: DJJA Mileage: 15165 KM ---------------------------------------------------------------
01 Engine System description: 2.0l R4 TFSI Software number: 8V0906259P Software version: 0001 Hardware number: 06K907425E Hardware version: H13 ODX name: EV_ECM20TFS0208V0906259P ODX version: 001003 Long coding: 092500122466010E3004
Trouble codes: No trouble codes found --------------------------------------------------------------- 02 Transmission System description: GSG DQ381 Software number: 0GC300012A Software version: 1403 Hardware number: 0GC927711G
Hardware version: H06 ODX name: EV_TCMDQ381061 ODX version: 001��� Long coding: 0014 Trouble codes: No trouble codes found --------------------------------------------------------------- 03 Brakes System description: ESC Software
number: 5Q0614517CF Software version: 0513 Hardware number: 5Q0614517AD Hardware version: H25 Serial number: 62287000000472 ODX name: EV_Brake1UDSContiMK100IPB ODX version: 036010 Long coding: 01FA6BA15427216D457C030940C56980D62A84A2C0029677384250D8C2A8430000000012121212B835351919323200
Trouble codes: No trouble codes found --------------------------------------------------------------- 08 Air Conditioning System description: Climatronic Software number: 5G0907044CF Software version: 1801 Hardware number: 5G0907044CF
Hardware version: H04 ODX name: EV_ACClimaBHBVW37X ODX version: 006145 Long coding: 0002000420010000110500401211140A Trouble codes: No trouble codes found --------------------------------------------------------------- 09 Central
Electrics System description: BCM MQBAB MNA Software number: 5Q0937085BN Software version: 0253 Hardware number: 5Q0937085BF Hardware version: H36 Serial number: 01001723401103 ODX name: EV_BCMMQB ODX version: 018001 Long
coding: 000000000000000000000000000000000000000000000000000000000000 Trouble codes: No trouble codes found --------------------------------------------------------------- 13 Adaptive Cruise Control System description: ACC BOSCH MQB Software
number: 5Q0907572J Software version: 0654 Hardware number: 3QF907572 Hardware version: H10 ODX name: EV_ACCBOSCHVW416 ODX version: 002006 Long coding: 330000C159FFC728949C810580401600000000000000000000 Trouble codes: No
trouble codes found --------------------------------------------------------------- 14 Wheel Dampening System description: DAEMPFUNGS-SG Software number: 5Q0907376B Software version: 0121 Hardware number: 5Q0907376A Hardware version: H17
Serial number: 27071741350330 ODX name: EV_DRCONTITEMIC ODX version: 001019 Trouble codes: No trouble codes found --------------------------------------------------------------- 15 Airbag System description: AirbagVW20 Software
number: 5Q0959655J Software version: 0830 Hardware number: 5Q0959655J Hardware version: 010 Serial number: 003GCR09V4M ODX name: EV_AirbaVW20SMEVW37X ODX version: 002144 Long coding: 8CCCFC00000000005000001AC24800000065 Trouble
codes: No trouble codes found --------------------------------------------------------------- 16 Steering Column System description: Lenks. Modul Software number: 5Q0953507HN Software version: 0140 Hardware number: 5Q0953549E Hardware
version: 003 Serial number: 28081708491063 ODX name: EV_SMLSKLOMQB ODX version: 020002 Long coding: 0C10 Trouble codes: No trouble codes found --------------------------------------------------------------- 17 Dashboard System
description: KOMBI Software number: 5G1920891A Software version: 3193 Hardware number: 5G1920891A Hardware version: 407 ODX name: EV_DashBoardVDDMQBAB ODX version: 009058 Long coding: 0BAD301A7F88CF0502886B0B54010000A0000000
Trouble codes: No trouble codes found --------------------------------------------------------------- 19 Gateway System description: GW MQB High Software number: 3Q0907530G Software version: 4303 Hardware number: 3Q0907530C Hardware
version: 433 Serial number: 0006720672 ODX name: EV_GatewNF ODX version: 013023 Long coding: 030100047F085900FB00827A9C0F00010001070000000000000000000000 Trouble codes: No trouble codes found ---------------------------------------------------------------
22 All Wheel Control System description: Haldex4Motion Software number: 0CQ907554H Software version: 7083 Hardware number: 0CQ525130 Hardware version: H52 Serial number: HA1-00030.06.1700012929 ODX name: EV_AllWheelContrHA1VW37X
ODX version: 004013 Long coding: 0001 Trouble codes: No trouble codes found --------------------------------------------------------------- 29 Light Control Left System description: LCM_MLBevo Software number: 8V0907399D Software
version: 0014 Hardware number: 8V0907399D Hardware version: H08 ODX name: EV_LCMLeftHELLAAU736 ODX version: 001012 Trouble codes: No trouble codes found --------------------------------------------------------------- 2B Steering
Column Lock System description: ELV-MQBA Software number: 5Q0905861A Software version: 0120 Hardware number: 5Q0905861A Hardware version: H01 Serial number: 17000219365007 ODX name: EV_ELVMarquMQB ODX version: 004111 Long
coding: 5D00000000000000 Trouble codes: No trouble codes found --------------------------------------------------------------- 39 Light Control Right System description: LCM_MLBevo Software number: 8V0907399D Software version: 0014
Hardware number: 8V0907399D Hardware version: H08 ODX name: EV_LCMRightHELLAAU736 ODX version: 001012 Trouble codes: No trouble codes found --------------------------------------------------------------- 3C Lane Change Assistant
Right System description: HRE_Master Software number: 5Q0907686C Software version: 0080 Hardware number: 5Q0907686C Hardware version: H12 Serial number: 0452083652 ODX name: EV_HREntryHella ODX version: 001028 Long coding:
02011103 Trouble codes: No trouble codes found --------------------------------------------------------------- 42 Driver Door System description: TSG FS Software number: 5Q0959593E Software version: 0041 Hardware number: 5Q0959593B
Hardware version: 020 Serial number: 120817EHB34222 ODX name: EV_DCUDriveSideEWMAXKLO ODX version: 006003 Long coding: 003E13208000040000000000 Trouble codes: No trouble codes found ---------------------------------------------------------------
44 Steering Assistance System description: EPS_MQB_ZFLS Software number: 3Q0909144K Software version: 5072 Hardware number: 3Q0909144H Hardware version: 506 ODX name: EV_SteerAssisMQB ODX version: 013144 Long coding: 9107
Trouble codes: No trouble codes found --------------------------------------------------------------- 4B Multifunction Module System description: FCM MQB Low Software number: 3Q0907338 Software version: 0286 Hardware number: 3Q0907338
Hardware version: 002 Serial number: 23081710521553 ODX name: EV_MultiModulContiVW48X ODX version: 001010 Long coding: 000000050100165206710F01020000000000000000000000000000000000 Trouble codes: No trouble codes found ---------------------------------------------------------------
52 Passenger Door System description: TSG BFS Software number: 5Q0959592E Software version: 0041 Hardware number: 5Q0959592B Hardware version: 020 Serial number: 120817EHB10294 ODX name: EV_DCUPasseSideEWMAXKLO ODX version:
006003 Long coding: 003E13208C00040000800000 Trouble codes: No trouble codes found --------------------------------------------------------------- 56 Radio System description: MU-S-NS-US Software number: 3Q0035876B Software version:
0842 Hardware number: 3Q0035876B Hardware version: 851 ODX name: EV_MUStd4CDELP ODX version: 001001 Long coding: 027310020000000051220002001808009F0507F401200405C6 Trouble codes: No trouble codes found ---------------------------------------------------------------
5F Multimedia System description: MU-S-NS-US Software number: 3Q0035876B Software version: 0842 Hardware number: 3Q0035876B Hardware version: 851 ODX name: EV_MUStd4CDELP ODX version: 001001 Long coding: 027310020000000051220002001808009F0507F401200405C6
Trouble codes: No trouble codes found --------------------------------------------------------------- 75 Telematics System description: OCULowMQBUS Software number: 5QE035285A Software version: 0570 Hardware number: 5QE035285A
Hardware version: 009 ODX name: EV_OCULowMQB ODX version: 001006 Long coding: 02730002C2821A017F1E06020000 Trouble codes: No trouble codes found --------------------------------------------------------------- 76 Parking Assistance
System description: PDC 8 Kanal Software number: 5QA919294B Software version: 0044 Hardware number: 5QA919294 Hardware version: H07 Serial number: 00030841861723003036 ODX name: EV_EPHVA18AU3700000 ODX version: 009035 Long
coding: 0471155811 Trouble codes: No trouble codes found --------------------------------------------------------------- A5 Driver Assistance System description: MQB_B_MFK Software number: 3Q0980654H Software version: 0272 Hardware
number: 3Q0980654A Hardware version: H08 Serial number: 11081712K12803 ODX name: EV_MFKBoschMQBB ODX version: 001001 Long coding: 0003070000000201002213548150490084000E200120 Trouble codes: No trouble codes found ---------------------------------------------------------------
A9 Structure Borne Sound System description: SAS-GEN 2 Software number: 5G0907159D Software version: 0001 Hardware number: 4H0907159A Hardware version: H07 Serial number: 170721200366 ODX name: EV_SoundActuaGen2AU64X ODX version:
003010 Trouble codes: No trouble codes found --------------------------------------------------------------- B7 Start System Interface System description: VWKESSYMQB Software number: 5Q0959435C Software version: 0803 Hardware number:
5Q0959435 Hardware version: 021 Serial number: 0453163909 ODX name: EV_KessyHellaMQBAB ODX version: 002020 Long coding: 032C1C Trouble codes: No trouble codes found ---------------------------------------------------------------
D6 LED Module Left System description: LED1L Software number: 7P5941572A Software version: 0002 Hardware number: 7P5941572A Hardware version: H06 ODX name: EV_LEDMinMaxL_KEBODAVW481 ODX version: 001003 Trouble codes:
No trouble codes found --------------------------------------------------------------- D7 LED Module Right System description: LED1R Software number: 7P5941572A Software version: 0002 Hardware number: 7P5941572A Hardware version: H06
ODX name: EV_LEDMinMaxR_KEBODAVW481 ODX version: 001003 Trouble codes: No trouble codes found

 

[Diggs24]

fuel level?

 

[toothofwar]

3/4

 

[Diggs24]

Ever log fuel pressure with obd11? Hpfp might have tapped out with the cold temps. Also you may have more than e20 in there. Both together could lead to that.

 

[toothofwar]

I have not. I'll do some digging to figure out how to log it and report back. I'm Going to try to pull the plugs and check them tomorrow.

 

[Diggs24]

It's not the plugs.

 

[swcrow]

That sounds horrendous and like a dropped valve

 

[toothofwar]

The multiple cylinder misfire is the one that scares me the most. Idk.......

 

[Diggs24]

Dropped valve would be obvious. He wouldn't be driving it 100 miles home. It's multiple misfire (p0300) because more than one cylinder misfired. Just give it pump gas for awhile and see if it happens again.

 

[toothofwar]

So did it go into limp mode? Is that why it was running so bad before I shut it off?

 

[Diggs24]

"DTC P130A “Hide Cylinder” indicates that excessive misfiring has occurred. As a result, the ECM has turned off a fuel injector to prevent catalyst damage."

 

[toothofwar]

Copy. Sorry, this is new territory for me. Didn't Really expect to see this on a 2yo 9500 mile car.

 

[sterkrazzy]

I think Diggs is on the right track, but he can read all that nonsense better than I can. It makes since that it'd be fuel pump or gas related.

 

[swcrow]

Dropped valve would be obvious. He wouldn't be driving it 100 miles home. It's multiple misfire (p0300) because more than one cylinder misfired. Just give it pump gas for awhile and see if it happens again.

Diggs.... you’re right.... didn’t catch the “drive 100 miles” portion #because ADD