Experiencing car trouble can be incredibly frustrating, especially when you think you’ve just solved a problem, only to encounter a new one. Recently, I decided to perform some preventative maintenance on my 2015 Volkswagen Gti Autobahn, opting to replace the spark plugs and ignition coils. I used high-quality components, specifically OEM NGK RS7 Double Iridium Spark Plugs and Red Top OE 8V RS3 / B9 S4 Ignition Coil Packs. The process seemed straightforward enough, and the initial results were promising.
During the replacement, I did notice that the D-rings on two of the old coils were brittle, indicating heat stress and age. This reinforced my decision to replace them and is something other 2015 Volkswagen GTI Autobahn owners might want to inspect. I even took the GTI for a celebratory 25-minute test drive after the install. The car ran beautifully, power delivery felt smooth, and I was genuinely enjoying the drive. However, my good mood was short-lived. As I turned onto my street, the dreaded ECP light illuminated, and the engine stalled. A promising afternoon of car maintenance ended in disappointment and a new mystery.
The next day, I hooked up my VCDS to pull the fault codes, hoping to pinpoint the issue. To my surprise, the new codes pointed towards fuel delivery problems. This was unexpected, especially after just replacing the ignition components. It made me question if the spark plugs and coils were even necessary in the first place, although given the condition of the old coil D-rings, they likely needed replacing soon anyway.
The fault codes suggest potential issues with the fuel system. I know there was a fuel pump recall for this generation of GTI sometime in the past, and I suspect there might be another active recall or perhaps the previous repair is now failing. Alternatively, the problem could lie with the fuel injectors.
Here are the engine fault codes I retrieved using VCDS:
Sunday,07,April,2024,19:39:40:31634 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64 VCDS Version: 23.11.0.0 (x64) Data version: 20231027 DS351.0 www.Ross-Tech.com Dealer/Shop Name: Larry V Home VIN: 3VW447AU9FM079073 License Plate: Mileage: 152043 Repair Order: -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 01: Engine Labels: 06K-907-425-V1.clb Control Module Part Number: 5G0 906 259 A HW: 06K 907 425 B Component and/or Version: 2.0l R4 TFSI H13 0006 Software Coding: 091D00124424002F1000 Work Shop Code: WSC 00066 790 00149 ASAM Dataset: EV_ECM20TFS0205G0906259A 001008 (VW37) ROD: EV_ECM20TFS0205G0906259A.rod VCID: 2C5C16AA4770A5F14F-8078 7 Faults Found: 17387 - Monitoring of Fuel Injector for Cylinder 1 P10B1 00 [00101100] - Malfunction Detected Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 5 Mileage: 244647 km Date: 2024.03.29 Time: 10:28:32 Engine RPM: 1285.25 /min Normed load value: 21.2 % Vehicle speed: 17 km/h Coolant temperature: 101 C Intake air temperature: 56 C Ambient air pressure: 1020 mbar Voltage terminal 30: 13.535 V Unlearning counter according OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: CL T_AST_SAE: 26 s MAP_MES_SAE: 75 kPa Lambda probe voltage: bank 1: probe 1 (broadband probe): 1.870 V FAC_TPS_1_SAE: 18.359375 % FUP_H_SAE: 12870.0 kPa 17355 - Injector: Cylinder 1 (N30) P0201 00 [10101100] - Circuit Malfunction MIL ON - Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:03 Engine RPM: 737.50 /min Normed load value: 8.2 % Vehicle speed: 0 km/h Coolant temperature: 104 C Intake air temperature: 52 C Ambient air pressure: 1020 mbar Voltage terminal 30: 11.406 V Unlearning counter according OBD: 40 Engine: operating status: IS STATE_LS_SAE[1]: CL T_AST_SAE: 0 s MAP_MES_SAE: 34 kPa Lambda probe voltage: bank 1: probe 1 (broadband probe): 2.104 V FAC_TPS_1_SAE: 11.718750 % FUP_H_SAE: 8590.0 kPa 15125 - Cylinder 1 P0301 00 [11101101] - Misfire Detected MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:37 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa 15131 - Cylinder 3 P0303 00 [11101101] - Misfire Detected MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 1 Mileage: 244694 km Date: 2024.04.06 Time: 18:17:15 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa 15134 - Cylinder 4 P0304 00 [01100101] - Misfire Detected Not Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 1 Mileage: 244694 km Date: 2024.04.06 Time: 18:19:21 Engine RPM: 823.75 /min Normed load value: 16.1 % Vehicle speed: 0 km/h Coolant temperature: 105 C Intake air temperature: 58 C Ambient air pressure: 1010 mbar Voltage terminal 30: 14.042 V Unlearning counter OBD: 40 Engine: operating status: IS STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 16 s Engine oil temperature: 107.0 C Lambda probes actual: bank1: 1.2158 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 11130.0 kPa 15128 - Cylinder 2 P0302 00 [01100101] - Misfire Detected Not Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:37 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa 15137 - Random/Multiple Cylinder Misfire Detected P0300 00 [11101101] - - MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:37 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa Readiness: 0000 0000 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 01: Engine (5G0 906 259 A) 19:42:19 IDE00186 Fuel low pressure: actual value 11.003 bar IDE00188 Fuel high-pressure: actual value 71.7 bar IDE00201 High fuel pressure: specified value 69.0 bar IDE00202 Low fuel pressure: specified value 5.000 bar IDE00476 Fuel Metering Valve 18.66 % IDE01378 Fuel high pressure: control deviation -0.7 bar IDE01975 Numb.of misfir.: cylinder 1 0 IDE01976 Numb.of misfir.: cylinder 2 0 IDE01977 Numb.of misfir.: cylinder 3 0 IDE01978 Numb.of misfir.: cylinder 4 2 IDE03892 Fuel high pressure sensor: unconditioned voltage 1.519 V -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 01: Engine (5G0 906 259 A) 19:42:36 IDE00186 Fuel low pressure: actual value 11.003 bar IDE00188 Fuel high-pressure: actual value 68.3 bar IDE00201 High fuel pressure: specified value 68.0 bar IDE00202 Low fuel pressure: specified value 5.000 bar IDE00476 Fuel Metering Valve 21.70 % IDE01378 Fuel high pressure: control deviation -0.1 bar IDE01975 Numb.of misfir.: cylinder 1 0 IDE01976 Numb.of misfir.: cylinder 2 0 IDE01977 Numb.of misfir.: cylinder 3 0 IDE01978 Numb.of misfir.: cylinder 4 2 IDE03892 Fuel high pressure sensor: unconditioned voltage 1.451 V ENG100969 Fuel pump: fuel pressure: I-controller 0.000 % -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 01: Engine Labels: 06K-907-425-V1.clb Control Module Part Number: 5G0 906 259 A HW: 06K 907 425 B Component and/or Version: 2.0l R4 TFSI H13 0006 Software Coding: 091D00124424002F1000 Work Shop Code: WSC 00066 790 00149 ASAM Dataset: EV_ECM20TFS0205G0906259A 001008 (VW37) ROD: EV_ECM20TFS0205G0906259A.rod VCID: 2C5C16AA4770A5F14F-8078 7 Faults Found: 17387 - Monitoring of Fuel Injector for Cylinder 1 P10B1 00 [00101100] - Malfunction Detected Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 5 Mileage: 244647 km Date: 2024.03.29 Time: 10:28:32 Engine RPM: 1285.25 /min Normed load value: 21.2 % Vehicle speed: 17 km/h Coolant temperature: 101 C Intake air temperature: 56 C Ambient air pressure: 1020 mbar Voltage terminal 30: 13.535 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: CL T_AST_SAE: 26 s MAP_MES_SAE: 75 kPa Lambda probe voltage: bank 1: probe 1 (broadband probe): 1.870 V FAC_TPS_1_SAE: 18.359375 % FUP_H_SAE: 12870.0 kPa 17355 - Injector: Cylinder 1 (N30) P0201 00 [10101100] - Circuit Malfunction MIL ON - Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:03 Engine RPM: 737.50 /min Normed load value: 8.2 % Vehicle speed: 0 km/h Coolant temperature: 104 C Intake air temperature: 52 C Ambient air pressure: 1020 mbar Voltage terminal 30: 11.406 V Unlearning counter OBD: 40 Engine: operating status: IS STATE_LS_SAE[1]: CL T_AST_SAE: 0 s MAP_MES_SAE: 34 kPa Lambda probe voltage: bank 1: probe 1 (broadband probe): 2.104 V FAC_TPS_1_SAE: 11.718750 % FUP_H_SAE: 8590.0 kPa 15125 - Cylinder 1 P0301 00 [10101100] - Misfire Detected MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:37 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa 15131 - Cylinder 3 P0303 00 [10101100] - Misfire Detected MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 1 Mileage: 244694 km Date: 2024.04.06 Time: 18:17:15 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa 15134 - Cylinder 4 P0304 00 [00100100] - Misfire Detected Intermittent - Not Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 1 Mileage: 244694 km Date: 2024.04.06 Time: 18:19:21 Engine RPM: 823.75 /min Normed load value: 16.1 % Vehicle speed: 0 km/h Coolant temperature: 105 C Intake air temperature: 58 C Ambient air pressure: 1010 mbar Voltage terminal 30: 14.042 V Unlearning counter OBD: 40 Engine: operating status: IS STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 16 s Engine oil temperature: 107.0 C Lambda probes actual: bank1: 1.2158 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 11130.0 kPa 15128 - Cylinder 2 P0302 00 [00100100] - Misfire Detected Intermittent - Not Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:37 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa 15137 - Random/Multiple Cylinder Misfire Detected P0300 00 [10101100] - - MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 2 Fault Frequency: 2 Mileage: 244667 km Date: 2024.03.29 Time: 11:42:37 Engine RPM: 1891.25 /min Normed load value: 22.4 % Vehicle speed: 26 km/h Coolant temperature: 103 C Intake air temperature: 51 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.671 V Unlearning counter OBD: 40 Engine: operating status: PL STATE_LS_SAE[1]: OL_ERR T_AST_SAE: 28 s Engine oil temperature: 109.0 C Lambda probes actual: bank1: 1.2871 FAC_LAM_LIM[1]: 0.000 % FUP_H_SAE: 15280.0 kPa Readiness: 0000 0000 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 01: DTCs clearedThe codes include:
- P10B1 (Monitoring of Fuel Injector for Cylinder 1): Indicates a malfunction detected in the fuel injector circuit for cylinder 1.
- P0201 (Injector: Cylinder 1 (N30) – Circuit Malfunction): Confirms a circuit malfunction specifically for injector cylinder 1.
- P0300, P0301, P0302, P0303, P0304 (Misfire Detected Cylinders 1-4 & Multiple/Random): Signifies misfires across all cylinders, which could be a symptom of fuel starvation.
These codes, combined with the sudden engine stall, strongly suggest a fuel delivery issue. The question now is how to differentiate between a failing fuel pump and faulty injectors on my 2015 Volkswagen GTI Autobahn. Is there a reliable way to diagnose whether the fuel pump or the injectors are the root cause of these problems? Any advice from fellow GTI owners or experienced mechanics would be greatly appreciated!
