P0087 & P0090 but no metal shavings?

Petra's cousin

Well-known member
Joined
Sep 13, 2016
Location
Calgary
TDI
Mk VI TDI Golf Wagon
Kid called me on Friday night last week when our 2011 TDI Sportwagen died on him and wouldn't restart. Pulled codes with my phone and generic OBD reader when I picked him up and saw P0130, P2102 (pending), P0087 (pending) and P0090 (pending).

Had the car towed home fearing the worst (guess what comes up when you search P0087 & P0090!), pulled the fuel filter and didn't see anything obvious in the filter body (clean, clear greenish fluid which I assume is diesel, I've never paid attention to what it looks like, but definitely not gasoline), possibly a few light sparkly bits on the filter.

Next day I pulled the valve on the HPFP and found nothing but clean fluid in the bottom of the machined port. Breathed a big sigh of relief and have had to leave it due to too many other things going on the last couple of days. I am second guessing that I should have looked closer at the filter screen on the body of the valve, so I'll pull it a second time to have a look again but with how clean the cavity was not sure I'll find anything (especially when compared to the photos I've seen online).

What is my next step? I haven't had a chance to plug in with my old laptop and VCDS, what tests should I run with it, or is this a more basic diagnostic process?

As mentioned above, 2011 TDI Sportwagen (they are branded as Golfs up here in Canada), ~400 000 km (240k miles), delete pipe and tune installed last January. I think I've reset the P0130 in the past (I have an O2 sensor in my Amazon cart since the last time it came up), I don't recognize the P2102. Car seems to run good the few times I've driven it in the last year but I don't actually drive it much anymore.

Thanks.
 

Tuheeden

Veteran Member
Joined
Sep 18, 2022
Location
North Carolina
TDI
2013 & 2014 Jetta sportwagon
It doesn't take much metal to clog the injectors and the codes and symptoms sure sound like the HPFP.
Since you have VCDS that would be next. It will give you much better information.
When you remove the meter valve, use a flashlight to look for anything shiney.
If the fuel pump is shot you can check the fuel pump pressure while cranking and it's likely zero or a couple bar.
Let us know what you find
 

Will27

Well-known member
Joined
Jul 25, 2017
Location
New Zealand
TDI
'06 Golf TDI, '08 Caddy TDI, '13 Passat Alltrack
If you have no metal shavings, the P0090 could be a clue. If the pressure regulator is not working (wiring or the regulator itself) I'd assume you'll have no high fuel pressure. You could also check and confirm the lift and auxillary pumps are working with VCDS.
 

Tuheeden

Veteran Member
Joined
Sep 18, 2022
Location
North Carolina
TDI
2013 & 2014 Jetta sportwagon
If you have no metal shavings, the P0090 could be a clue. If the pressure regulator is not working (wiring or the regulator itself) I'd assume you'll have no high fuel pressure. You could also check and confirm the lift and auxillary pumps are working with VCDS.
Actually the engine will start with the fuel pump metering valve disconnected. You will get a light but it will run. Just FYI.
 

Will27

Well-known member
Joined
Jul 25, 2017
Location
New Zealand
TDI
'06 Golf TDI, '08 Caddy TDI, '13 Passat Alltrack
Actually the engine will start with the fuel pump metering valve disconnected. You will get a light but it will run. Just FYI.
On a quick google the P0090 code is for the regulator on the fuel rail, not the metering valve on the pump.
Edit: Disregard, VCDS scan below shows its the metering valve N290 setting this code
 
Last edited:

Petra's cousin

Well-known member
Joined
Sep 13, 2016
Location
Calgary
TDI
Mk VI TDI Golf Wagon
Ok, pulled the valve on the top of the HPFP again to double check, definitely no metal on the screen, and nothing in the cavity except the tiny bits of dirt I knocked in there. I bolted it back down again, reinstalled the fuel filter in its housing (also very clean) and plugged in my VCDS. Pulled codes and got the same P0090, P0087, P2102 (intermittent) and a P0130. The P0090 says open circuit, the P0087 (two snapshots with some pressure data - 640 bar then 704 bar, about a second apart). The P0090 triggered about 7 minutes after the P0087 so might be a red herring.

Not sure what fuel pump tests to run with VCDS, any insights would be great. I did run a couple of pump tests to try to get the filter and metering valve primed again.

Did have a loud buzzing sound start while I was fiddling around with VCDS pulling codes, didn't start right away but afterwards. Can't really seem to locate its source other than when I put a screwdriver on the HPFP it seems to come from there. Don't ever remember hearing that sound before.
 

Petra's cousin

Well-known member
Joined
Sep 13, 2016
Location
Calgary
TDI
Mk VI TDI Golf Wagon
5 Faults Found:
000304 - Oxygen (Lambda) Sensor B1 S1
P0130 - 001 - Malfunction in Circuit - MIL ON
Freeze Frame:
Fault Status: 11100001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 386331 km
Time Indication: 0
Date: 2024.11.18.
Time: 00:19:46

Freeze Frame:
RPM: 1633 /min
Speed: 64.0 km/h
Lambda: 1.6 %
Mass Air / Rev.: 515.0 mg/str
Voltage: 0.000 V
Angle: 0.000°
Voltage: 3.300 V

008450 - Throttle Valve Actuator Module (J338): Motor Circuit
P2102 - 000 - Signal Low - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 2
Fault Frequency: 6
Reset counter: 255
Mileage: 386740 km
Time Indication: 0
Date: 2024.11.22.
Time: 09:27:14

Freeze Frame:
RPM: 1886 /min
Speed: 74.0 km/h
Load: 9.4 %
Load: 100.0 %
Lambda: 99.4 %
Mass Air / Rev.: 550.0 mg/str
Temperature: 71.1°C

000135 - Fuel Rail/System Pressure
P0087 - 004 - Too Low
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 386743 km
Time Indication: 0
Date: 2024.11.22.
Time: 09:30:42

Freeze Frame:
RPM: 2093 /min
Inj. Quantity: 6.3 mg/str
(no units): 15.0
Pressure: 640.0 bar
Pressure: 88.0 bar
Temperature: 10.8°C
Tank Cont.: 49.8 l

000135 - Fuel Rail/System Pressure
P0087 - 006 - Too Low
Freeze Frame:
Fault Status: 01100110
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 386743 km
Time Indication: 0
Date: 2024.11.22.
Time: 09:30:43

Freeze Frame:
RPM: 2070 /min
Inj. Quantity: 6.3 mg/str
(no units): 4.0
Pressure: 704.0 bar
Pressure: 88.0 bar
Temperature: 10.8°C
Tank Cont.: 49.8 l

000144 - Valve for Fuel Metering (N290)
P0090 - 000 - Open Circuit - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 2
Fault Frequency: 2
Reset counter: 255
Mileage: 386743 km
Time Indication: 0
Date: 2024.11.22.
Time: 09:37:38

Freeze Frame:
RPM: 0 /min
Speed: 0.0 km/h
Voltage: 11.86 V
Pressure: 0.0 bar
Inj. Quantity: 0.0 mg/str
Lambda: 39.5 %
Lambda: 9.5 %
 

borninabus

Veteran Member
Joined
Feb 18, 2020
Location
Arizona
TDI
-2013 JSW 6MT- -2006 Jetta DSG-
a little difficult to read the edited scan, but the first thing i see is low voltage.
check your charging voltage @ the battery...ehem, or with vcds.
how many volts do you see @ 1500RPM?
 

Petra's cousin

Well-known member
Joined
Sep 13, 2016
Location
Calgary
TDI
Mk VI TDI Golf Wagon
a little difficult to read the edited scan, but the first thing i see is low voltage.
check your charging voltage @ the battery...ehem, or with vcds.
how many volts do you see @ 1500RPM?
Car currently doesn’t run but does have enough battery voltage to turn over so no way to check charging voltage.
 
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