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Hi guys, I'm Josh, and I am at a complete loss with this car. I think it's a fuel issue of some kind. Codes attached at the bottom of the post. Thank you in advance for your time and knowledge.
Wheel Car Tire Vehicle Grille

2012 Jetta GLI 2.0T TSI CCTA Gen 1
Bottom end was replaced 3 yrs ago and has about 85,000 miles on it with 141,000 miles on the odometer


Performance upgrades:
• BC Racing coilovers
• Spulen short shift and bushings
• Unitronic turbo-back exhaust
• APR cold air intake and inlet pipe
• Eibach front and rear sway bars
• Unitronic stage 2 tune

The problem(s):
EPC light randomly came on after starting the car after coming out of the grocery store. There was a lack of power but didn't feel like full limp mode. The car was really difficult to get started after that. It would turn over but it would usually bog out even with the gas pedal floored. If I was able to get it through that awful start-up procedure that felt extremely bad for the car, it would run ok. Not great, but ok. Embarrassingly, there was a fuse blown under the hood that was found by a VW mechanic. He didn't know why it blew and had no interest in finding out (the guy was rude and kind of a jerk, unfortunately). When replaced, it was fine.

About a week later, I got it tuned with a Unitronic stage 2 flash. Ran bad on my way home, called the tuner people, and bought the spark plugs they recommended. Ran great after I put them in.

Three days after the tune, the clutch started slipping. I expected this. Thought it would last a little more than 3 days, but it's all good. Bought a DKM clutch kit that I would love to install. Before I could get to the garage, though...

Battery dead. Completely. One of the dome light buttons was depressed, so it must have been that? Jumped the car and the car was giving me that issue again where it feels like it's not getting enough fuel. The battery was dead several times and it definitely wasn't either of the dome lights. Parasitic draw? That fuse was blown again so I replaced it. Didn't fix the issue, and this time, if you're able to get it started, it runs really badly. Sounds and feels like it isn't getting enough fuel. I replaced the fuel filter, fuel pump control module (above the low pressure fuel pump), and the HPFP. Got ignition coils because of the misfire codes, too.

The mechanic that currently has it says he wants to change the HPFP (again) and the fuel pump control module (again). I am pretty certain those are not the issues considering I've personally already replaced them. But, I am in no way an actual mechanic. I just dabble because I (typically) enjoy it. I did take auto-tech in highschool and research everything a lot before and during any project, though, and I'm confident it was all done correctly.
Anyway, I am really thinking that the blown fuse has something to do with this, or maybe some kind of related electrical issue, but I'm not sure and can't find much info about certain aspects. I asked the mechanic about the fuel pressure regulator, and he pointed to the HPFP and said it's built into it, even though I have purchased one that looked like a small, separate piece. I couldn't find it's location or any videos of an install, so I could be wrong. I did purchase the fuel pressure regulator with it matching my vehicle on the site I bought it from. Maybe this guy is screwing with me or just won't admit that he's not sure. Perhaps there are also sensors that could cause such an issue?

The car has been down for a month now, and I feel like this fuel issue is due to something small that has continually been overlooked by myself and two mechanics, one of which who specializes in VWs. Any help or recommendations would be GREATLY appreciated. Thank you for reading all of this and my apologies if it is a jumbled, rambling mess. I've learned a lot from these forums but have never posted before.


Some of the codes explained:
Since the tune, there have been a few issues. Some I knew were coming. The clutch now needs replaced, for instance, but that is not the priority at the moment. Some of the codes listed below have been there. Switching to LEDs threw some, the clockspring in the steering wheel is faulty so the steering wheel controls don't work which accounts for some codes as well. Tire pressure monitoring has never worked. Since tune, I've seen a bunch of codes saying "Function limitation due to missing message". Lastly, there is an aftermarket audio system with headunit, amp, and subs that also throws codes.

I don't know about the parking brake control module j540. It started reading with this issue but I haven't looked into it yet.

It's all a bit overwhelming at this point

Recently Replaced:
• High pressure fuel pump
• Fuel control module
• Ignition coils
• Spark plugs
• Fuel filter

Vortex wouldn't let me attach the codes, so I had to do a copy and paste...

Date: 2021-12-14 14:30

VIN: 3VW587AJ3CM015332
Car: Volkswagen Jetta GLI
Year: 2012
Body type: Saloon
Engine: CCTA
Mileage: 226700 KM

---------------------------------------------------------------
Fault
Control unit: 01 Engine
Active faults: 0
Inactive faults: 8
System description: MED17.5.2 TFSI 2 03
Software number: 06J906027J
Software version: 2907
Hardware number: 06J907309A
Faults:
P0300 - Random/Multiple Cylinder Misfire Detected
static
Priority: 0
Frequency counter: 2
Driving cycle: 255
Mileage: 226709 km
P0303 - Cyl.3 Misfire Detected
Intermittent
Priority: 0
Frequency counter: 1
Driving cycle: 255
Mileage: 226709 km
P1195 - Fuel Pressure Regulator Valve Open circuit/short circuit to ground
Intermittent
Priority: 0
Frequency counter: 1
Driving cycle: 255
P2294 - Fuel Pressure Regulator "B" Control Circuit/Open
Intermittent
Priority: 0
Frequency counter: 1
Driving cycle: 255
P0087 - Fuel Rail/System Pressure - Too Low
static
Priority: 0
Frequency counter: 1
Driving cycle: 255
Mileage: 226709 km
P0301 - Cyl.1 Misfire Detected
static
Priority: 0
Frequency counter: 1
Driving cycle: 255
Mileage: 226709 km
P0304 - Cyl.4 Misfire Detected
static
Priority: 0
Frequency counter: 1
Driving cycle: 255
Mileage: 226709 km
P0302 - Cyl.2 Misfire Detected
static
Priority: 0
Frequency counter: 1
Driving cycle: 255
Mileage: 226709 km


Mileage: 226700 km
Date: 2021-12-14 14:09

---------------------------------------------------------------
Fault
Control unit: 03 Brakes
Active faults: 0
Inactive faults: 0
System description: ESP MK60EC1
Software number: 1K0907379BJ
Software version: 0121
Hardware number: 1K0907379BJ
Hardware version: H31
Faults:
No trouble codes found

Mileage: 226700 km
Date: 2021-12-14 14:09

---------------------------------------------------------------
Fault
Control unit: 08 Air Conditioning
Active faults: 0
Inactive faults: 0
System description: Climatronic
Software number: 5K0907044EG
Software version: 1010
Hardware number: 5K0907044EG
Hardware version: H17
ODX name: EV_Climatronic
ODX version: A01010
Faults:
No trouble codes found

Mileage: 226700 km
Date: 2021-12-14 14:09

---------------------------------------------------------------
Fault
Control unit: 09 Central Electrics
Active faults: 0
Inactive faults: 4
System description: BCM PQ35 M
Software number: 5K0937086L
Software version: 0046
Hardware number: 5K0937086L
Hardware version: 011
Faults:
00473 - Electronic parking brake control module -J540 No signal/communication
static
Priority: 6
Frequency counter: 19
Driving cycle: 113
Mileage: 226709 km
01259 - Fuel pump relay Open circuit/short circuit to ground
Intermittent
Priority: 5
Frequency counter: 1
Driving cycle: 153
Mileage: 226709 km
01496 - Left fog light bulb Open circuit/short circuit to B+
static
Priority: 4
Frequency counter: 1
Driving cycle: 113
Mileage: 226709 km
01500 - Right fog light bulb Open circuit/short circuit to B+
static
Priority: 4
Frequency counter: 1
Driving cycle: 113
Mileage: 226709 km


Mileage: 226700 km
Date: 2021-12-14 14:09

---------------------------------------------------------------
Fault
Control unit: 15 Airbag
Active faults: 0
Inactive faults: 1
System description: AirbagVW10G
Software number: 5C0959655E
Software version: 0807
Hardware number: 5C0959655E
Hardware version: 013
Serial number: 003GTM00VJ3.
ODX name: EV_AirbaVW10SMEVW360
ODX version: A01020
Faults:
B10001B - Driver airbag igniter Resistance too high
static
Date: 2117-12-01 01:09:47
Mileage: 226709 km
Priority: 2
Malfunction frequency counter: 1
Unlearning counter: 255


Mileage: 226700 km
Date: 2021-12-14 14:10

---------------------------------------------------------------
Fault
Control unit: 16 Steering Column
Active faults: 0
Inactive faults: 1
System description: LENKS.MODUL
Software number: 1K5953521AK
Software version: 0140
Hardware number: 5K0953569B
Hardware version: 014
Serial number: 20110515100344
ODX name: EV_SMLSNGVOLWSXS
ODX version: A01004
Faults:
U108E00 - Control unit in steering wheel No Communication
static
Date: 2117-12-03 00:08:10
Mileage: 226709 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 113


Mileage: 226700 km
Date: 2021-12-14 14:10

---------------------------------------------------------------
Fault
Control unit: 17 Dashboard
Active faults: 0
Inactive faults: 3
System description: KOMBI
Software number: 5C6920970B
Software version: 0420
Hardware number: 5C6920970B
Hardware version: H20
Serial number: 00000000000000
ODX name: EV_Kombi_UDS_VDD_RM09
ODX version: A04089
Faults:
B103E1B - Fuel gauge sensor 1 Resistance too high
Intermittent
Priority: 2
Malfunction frequency counter: 1
Unlearning counter: 153
U111100 - Function limitation due to missing message
static
U111100 - Function limitation due to missing message
static


Mileage: 226700 km
Date: 2021-12-14 14:10

---------------------------------------------------------------
Fault
Control unit: 19 Gateway
Active faults: 0
Inactive faults: 4
System description: J533 Gateway
Software number: 7N0907530D
Software version: 0614
Hardware number: 1K0907951
Hardware version: H35
Serial number: 15061101200192
Faults:
01325 - Tire Pressure Monitoring Control Module No signal/communication
static
Priority: 2
Frequency counter: 1
Driving cycle: 113
Mileage: 226709 km
01304 - Radio No signal/communication
static
Priority: 2
Frequency counter: 1
Driving cycle: 113
Mileage: 226709 km
00473 - Electronic parking brake control module -J540 No signal/communication
static
Priority: 2
Frequency counter: 1
Driving cycle: 113
Mileage: 226709 km
03272 - External audio source connection No signal/communication
static
Priority: 2
Frequency counter: 1
Driving cycle: 113
Mileage: 226709 km


Mileage: 226700 km
Date: 2021-12-14 14:10

---------------------------------------------------------------
Fault
Control unit: 1C Position Detection
Active faults: 0
Inactive faults: 0
System description: Kompass 001
Software number: 561919965
Software version: 0001
Hardware number: 561919965
Serial number: 1829227R02NC05
Faults:
No trouble codes found

Mileage: 226700 km
Date: 2021-12-14 14:10

---------------------------------------------------------------
Fault
Control unit: 25 Immobilizer
Active faults: 0
Inactive faults: 0
System description: IMMO
Software number: 5K0953234
Software version: 0420
Hardware number: 5K0953234
Hardware version: H20
ODX name: EV_Immo_UDS_VDD_RM09
ODX version: A03008
Faults:
No trouble codes found

Mileage: 226700 km
Date: 2021-12-14 14:10

---------------------------------------------------------------
Fault
Control unit: 42 Driver Door
Active faults: 0
Inactive faults: 1
System description: TUER-SG FT
Software number: 561959701
Software version: 0515
Hardware number: 3C0959793B
Hardware version: 002
Serial number: 0002512834
ODX name: EV_TSGFPQ35BRFVW46X
ODX version: A04001
Faults:
B11EC54 - Motor for front window regulator No basic setting
static
Date: 2117-12-01 01:10:09
Mileage: 226709 km
Priority: 7
Malfunction frequency counter: 1
Unlearning counter: 113


Mileage: 226700 km
Date: 2021-12-14 14:11

---------------------------------------------------------------
Fault
Control unit: 44 Steering Assistance
Active faults: 0
Inactive faults: 0
System description: EPS_ZFLS Kl. 69
Software number: 1K0909144M
Software version: 3201
Faults:
No trouble codes found

Mileage: 226700 km
Date: 2021-12-14 14:11

---------------------------------------------------------------
Fault
Control unit: 47 Sound System
Active faults: 0
Inactive faults: 2
System description: KonzernAmp10K
Software number: 3T0035456B
Software version: 0362
Hardware number: 3T0035456B
Hardware version: H06
Serial number: BP225319934511
ODX name: EV_AudioVerst10KanalSTT3
ODX version: S01001
Faults:
B130C13 - Double subwoofer speaker 1 Open circuit
static
Date: 2117-12-01 01:10:20
Mileage: 226709 km
Priority: 5
Malfunction frequency counter: 2
Unlearning counter: 113
B130D13 - Double subwoofer speaker 2 Open circuit
static
Date: 2117-12-01 01:10:20
Mileage: 226709 km
Priority: 5
Malfunction frequency counter: 2
Unlearning counter: 113


Mileage: 226700 km
Date: 2021-12-14 14:11

---------------------------------------------------------------
Fault
Control unit: 4F Central Electrics 2
Active faults: 0
Inactive faults: 0
System description: EZE_2
Software number: 7N0907532
Software version: 0614
Hardware number: 1K0907951
Hardware version: H35
Serial number: 15061101200192
Faults:
No trouble codes found

Mileage: 226700 km
Date: 2021-12-14 14:11

---------------------------------------------------------------
Fault
Control unit: 52 Passenger Door
Active faults: 0
Inactive faults: 0
System description: TUER-SG BT
Software number: 561959702
Software version: 0515
Hardware number: 3C0959792B
Hardware version: 002
Serial number: 0002507057
ODX name: EV_TSGBPQ35BRFVW46X
ODX version: A04001
Faults:
No trouble codes found

Mileage: 226700 km
Date: 2021-12-14 14:11

---------------------------------------------------------------
Fault
Control unit: 77 Telephone
Active faults: 0
Inactive faults: 3
System description: TELEFON
Software number: 5K0035730
Software version: 1030
Hardware number: 5K0035730
Hardware version: H09
Serial number: 00007660014248
ODX name: UHVNA
ODX version: A01009
Faults:
B104F13 - Left audio channel for speech/telephone Open circuit
static
Date: 2117-12-01 01:10:36
Mileage: 226565 km
Priority: 4
Malfunction frequency counter: 10
Unlearning counter: 113
B104E13 - Right audio channel for speech/telephone Open circuit
static
Date: 2117-12-01 01:10:36
Mileage: 226565 km
Priority: 4
Malfunction frequency counter: 1
Unlearning counter: 113
U106600 - Radio No Communication
static
Date: 2117-12-01 01:10:35
Mileage: 226565 km
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 113


Mileage: 226700 km
Date: 2021-12-14 14:12
 

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2013 vw mk6 jetta gli-Autobahn
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674 Posts
anytime fuses start blowing, it's time to look for a bad ground or a broken wire. The first clue, is whatever fuse keeps blowing, start tracing that electrical circuit.

Good luck...

biz
 
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