Golf 1.6 limp mode and P0087 fault

Hi Everyone,


New forum Member looking for some guidance from fellow members.


I have a 2010 1.6TDI Golf Match that has suddenly developed a problem, whilst cruising down motorway (60MPH) i accelerated in 5th and the car lost power and when into limp mode with flashing glow plug and workshop warning on dash. i continued to drive to my destination in limp mode (had a flight to catch so had to ensure i got to destination). upon switching the engine off, the fault lights went off and no further limp mode. i left the car parked for 4 days and then drove back home. upon start up, the car was fine and no noises and power and boost seemed ok, but after 10 mins of driving, the same fault appeared and limp mode was active again.


When i got home switched the engine off and once again the warning lights and messages disappeared. i had a friend scan the codes present on the car and got the following codes. P0087 (low fuel rail Pressure) and P229A (pressure regulation valve 2 control difference).


the fuel filter has been changed and is clean, no metal debris in filter container and also has not been ran low on fuel.
Ive also noticed that the car runs fine and boosts ok when cold, but as soon as the car is up to temperature this fault kicks straight back in. it also makes a noise kind of similar to injectors being starved of fuel.


have you guys any suggestions?


thanks for reading

Hello,

Did you find the cause? I have a vehicle doing the same except it won't clear upon restart unless I do it via scanner. I've added the faults below

Sunday,30,January,2022,07:20:52:00009
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 21.3.0.0
Data version: 20210226 DS325.0
www.Ross-Tech.com


VIN: WVWZZZ6RZBU082680 License Plate: VWPOLO



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 01: Engine Labels: 03L-906-023-CAY.clb
Control Module Part Number: 03L 906 023 MH HW: 03L 907 425 B
Component and/or Version: R4 1.6l TDI H33 9980
Software Coding: 00254016002500080000
Work Shop Code: WSC 31414 790 50316
ASAM Dataset: EV_ECM16TDI02103L906023MH 003013 (VW25)
ROD: EV_ECM16TDI02103L906023LK_SK25.rod
VCID: 78FF5DE7C3D3424BFB-802C
1 Fault Found:

7384 - Boost Pressure Regulation
P0299 00 [167] - Control Range Not Reached
MIL ON - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 231909 km
Date: 2022.01.30
Time: 19:16:47

Engine RPM: 2766.75 /min
Normed load value: 52.9 %
Vehicle speed: 51 km/h
Coolant temperature: 48 ∞C
Intake air temperature: 29 ∞C
Ambient air pressure: 940 mbar
Voltage terminal 30: 13.779 V
Unlearning counter according OBD: 40
Charge air pressure: specified value-MAP_SP_MMV: 1985.63 hPa
Charge air pressure: actual value-MAP_MMV: 1419.38 hPa
Air mass: actual value (mg/stroke)-MAF_MES: 559.521 mg/stroke
EGR Solen.val.: actual value-ANG_EGRV[0]: 0.378 %
Throttle valve adapter: actual value-ANG_THR[0]: 95.996 %
Charge air pressure actuator: acknowledgment-ANG_BPA[0]: 74.200 %
Engine torque-TQI_SP: 125.06 Nm


Readiness: 0 0 0 0 0



*********************** LOG 2 AFTER CLEARING CODE FOR 7384 - Boost Pressure Regulation and test drive again ***************




Sunday,30,January,2022,07:26:42:00009
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 21.3.0.0
Data version: 20210226 DS325.0
www.Ross-Tech.com


VIN: License Plate: VWPOLO


Address 01: Engine Labels: 03L-906-023-CAY.clb
Control Module Part Number: 03L 906 023 MH HW: 03L 907 425 B
Component and/or Version: R4 1.6l TDI H33 9980
Software Coding: 00254016002500080000
Work Shop Code: WSC 31414 790 50316
ASAM Dataset: EV_ECM16TDI02103L906023MH 003013 (VW25)
ROD: EV_ECM16TDI02103L906023LK_SK25.rod
VCID: 78FF5DE7C3D3424BFB-802C
1 Fault Found:

10116 - Fuel Rail/System Pressure
P0087 00 [167] - Too Low
MIL ON - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 231909 km
Date: 2022.01.30
Time: 19:25:15

Engine RPM: 3427.50 /min
Normed load value: 78.8 %
Vehicle speed: 41 km/h
Coolant temperature: 67 ∞C
Intake air temperature: 35 ∞C
Ambient air pressure: 940 mbar
Voltage terminal 30: 13.666 V
Unlearning counter according OBD: 40
Fuel high-pressure: actual value-FUP_FIL: 118.335 MPa
Fuel pressure regulator valve: specified value rail pressure-LV_PCV_CTL: 00000000
Fuel level-FTL_CAN: 15 l
Fuel temperature-TFU: 40 ∞C
Fuel Metering Valve-VCV: 34.996 %
Fuel Pressure Regulator Valve-PCV: 40.775 %
Fuel high pressure commanded value_1-FUP_SP_KPA_ENVD: 136273.193 kPa


Readiness: 0 0 0 0 1