01237 - Fuel Shut-Off Valve - Intermittent Fault

Hello everyone,
I encountered the following error after cleaning the measuring unit and replacing all four nozzles:

---
01237 - Fuel Shut-Off Valve (N109)
31-10 - Interruption / Short to Ground - Sporadic
---

Is it possibly a faulty relay 109, or does relay 109 not have anything to do with valve N109? The Audi 80 Avant, B4, 1Z is now running perfectly after cleaning and replacing the AFN injectors - no jerking, good power... I'm just puzzled by the error. While cleaning, I completely removed and disassembled the metering valve. I didn't work on the shut-off valve, but the error never appeared before.

Does anyone have a good idea? Thank you!

/viewtopic.php?t=449&highlight=*1237*

Hello,
I had the same problems and struggled with it for 1 year.
The engine fails to start every 3 months and sometimes only runs in emergency mode.
I had the error codes read out from a Bosch service:
Intermittent Solenoid Failure.
However, the problem remained.
Surprisingly in case of error:
By connecting a cable directly from the battery to the solenoid, and then repeatedly clicking the solenoid a few times, the car ran again for several months.
Now, however, we find ourselves at the end of the world.
The solenoid valve is not being activated at all.
The specified relay was not found, so all relays were removed, and some were partially re-solded, but without success.
I then connected a cable directly from the battery to the solenoid and was then able to, at least, drive home in emergency mode with an estimated 50 horsepower.
I've disassembled the entire car again and have finally found the source of the problem.
Cause:
There was a broken contact point on the three-pole connector at the pump.
(Upper contact for the shut-off valve)

Herefrom it becomes clear that the control unit actually checks the shut-off valve and only operates in emergency mode when supplied with external 12 volts.

Greetings
Andreas Stanzick
Audi 80 1Z / AEG

Tada... just as Rainer pointed out in his link several months ago!

Hello,
Certainly, Rainer's link is quite helpful for some people, but it's not a solution to a problem that occurs very rarely.
All the companies I spoke to simply shrugged and said:
"We can only do something if the error occurs or if we suspect something."
Previously, I had to pay a lot of tuition fees, but now I'm trying to help myself.
What does the note "Headlight rear reflector intermittent short to ground" mean, for example?
Where should I look?
Of course, professionals are aware that the wiring under the battery compartment can be exposed.
And that's exactly what people are looking for here.

Hello
Andreas Stanzick

Hello everyone
Had this problem on a Golf 3 1.9 TDI

Error:

01237 Fuel Shut-Off Valve - Mechanical Failure

I spoke with the Swiss VW hotline, but they were unable to assist me.
I have checked the shut-off valve, it clicks cleanly with 12V control. I have then
Using an ohmmeter, I checked all the cables, but without any results. Then, by chance, I removed the shut-off valve and saw that it had a poor ground connection on the ESP. I connected the ground cable directly to the pump and cleaned and reinstalled the valve. Error fixed.

I suspect that at the beginning, the control unit performs a resistance measurement on the valve.
Is the resistance outside the tolerance, then it's a matter of operating in emergency mode.

Best regards,
Sascha

Hello
I just signed up here because my car has been showing the same error since yesterday.
Spins excessively during starting, no performance.

Vehicle is a:
Polo SDI
1.7L Engine, Battery
213,000 km and year of manufacture 11/97, new tires.

I have deleted the errors, and the message now says:
01237 Fuel Shut-off Valve (N109)
04-00 Mechanical Fault.

My advantage: I have exactly the same car standing here, used as a parts truck.
Now, I would like to know beforehand whether it is actually the valve or perhaps the control line.
So, when measured in a resting state, no voltage is detected.

When should I measure at the shut-off valve?
When starting, with the engine running, or when everything is off?

I will now disconnect the {LEITUNG} and apply 12V to the {VENTIL}.
As I read in the search results, there should be a "click" sound.
Maybe you have some helpful tips for me.

Thank you.
Tim

Just a small update.

Unfortunately, I can't create new posts here... therefore, I'm writing again.
I hope that it will actually be read.


I just disconnected the fuel shut-off valve (the fuel line) and powered it on with 12V from the battery.
Can you hear a "click" once?
If I am measuring when the cables are disconnected, there are approximately 12 volts present.

Therefore, the tax department or anything related to it is likely ruled out.

Is it possible that the valve has a mechanical defect?
Or is it stuck?
I have never done anything like this before, so I'm a bit skeptical. Not that I'm making things worse than they already are...

I was directed to the car (100km to work and that's just one route)...


Thank you.
Greetings
Tim

Hello

I had the same problem with my Golf 4.
Emergency shutdown and overspeeding after start.
I have checked all the wires, including the ESP's ground connection to the motor; I haven't found any errors.

I then wanted to remove the ring cable shoe from the ELAB and re-attach it after cleaning. And what do I see? The entire shut-off valve was loose in the ESP!!

Everything was securely fastened and it worked perfectly!
Error could be deleted and did not reappear!

Thank you to everyone who writes and helps here!!

Once again, proof that the search function helps

Greetings

Hello fellow screw enthusiasts,

I have now read all the tips regarding the 12V power supply for the VP37 and have thoroughly checked everything in advance.

First, the vehicle data:
VW Passat Variant 4 Motion 1.9 TDI 110PS
255,000 km, February 22, 2000
Type 3B2 VW Part Number: 3B5 357
0603-37100
WVWZZZ3BZYE284221
Engine: AFN 246084 Transmission: EEP 30129 Paint: LC6M

Cause of the defect:
Due to improper handling of the 12 Volt power supply on the light machine, the thick cable was temporarily able to come into contact with the VP37 pump housing. A brief hiss, and a slight smell was coming from the connector of the VP37 (3-pole).

Damage Report:
Cable 3-pole at VP37 and at the control unit (small connector), blue and gray cable insulation melted. As well as after inspecting all fuses, a 10 Amp fuse at the side socket No. 5 "ABS Block" was found to be defective and replaced.

VCDS Diagonose performed with the following error codes:

Saturday, November 18, 2017, 21:59:23.53541
VCDS Version: RKS 17.8.0 runs on Windows XP x86
http://shop.dieselschrauber.de

Address 01: Engine Electronics Label file: DRV\038-906-018-AFN.lbl
ECU Part Number: 038 906 018 FT
Part and/or Version: 1.9l R4 EDC G040SG 2604
Encoding: 00003
Work Order Number: WSC 49603
VCID: 6D8639A4848CEC3F80C-4B3C
Error codes have been deleted.

2 error codes found:
17660 - Injector Start Valve (N108)
P1252 - 35-10 - Intermittent/Short to Ground - Sporadic
17946 - Fuel Shut-off Valve (N109)
P1538 - 35-00 - Intermittent/Short to Ground


Address 03: Brake Electronics Label File: DRV\8D0-907-389.lbl
Part number: 8D0 907 389 E
Part and/or Version: ABS/ESP all-wheel drive D36
Encoding: 04255
Operating Number: WSC 05326
VCID: 3536D1C4AC5C64FFB8C-5160
Error codes have been deleted.

1 Error found:
18265 - Final Signal
P1857 - 35-00 - Engine Control Unit Error Message

The following tests were conducted:

17946 - Fuel Shut-off Valve (N109)

Test on 18 Nov 2017: New cables (blue and grey) were laid from the motor control unit to the small connector, extending to the 3-pin connector of the VP37.

Examination on November 18, 2017: All 3 cables were fitted with new crimp contacts!
Test on 18 Nov 2017: The shut-off valve was tightened and is secure, a resistance test between – Pol and Battery showed 0.5 Ohm – Ground is present.

Test on 18 Nov 2017: Using a cable directly from the battery to the solenoid, listen for 2-3 clicks.

Inspection on November 18, 2017: There is no 12-volt supply at the 3-pin connector of the VP 37 from the engine control unit! Both the blue and the gray cable have no power !!

17660 - Injector Start Valve (N108)

Measured on November 18, 2017: Between contact 2+3, a 14.5 Ohm resistance was measured, which is within the tolerance of 12 - 20 Ohm!

Test on 18 Nov 2017: Using a cable directly from the battery to the solenoid, listen for 2-3 clicks.

Test on 18 Nov 2017: There is no 12 Volt signal at the 3-pin connector of the VP 37 from the engine control unit! Both with the blue and the gray cable

Now, to my question:

Where does the motor starter unit get its power to control the VP37 3-pole connectors?

If the engine control unit (ECU) does not receive 12 volts, this means that the power supply to the ECU is not present BEFORE the ECU. "The reason why ABS is now also complaining could only mean that the control unit is not providing 12 volts."

Tried another engine component diagnostic:
Result: No clicking sounds detected on numerous valves, only after selecting fan speed 1 and 2 did it work. The initial diagnostic points were stillness.

So, it would be very helpful to find out if I have a relay problem or even a wiring problem inside the vehicle, or, in the worst case, the engine control unit is malfunctioning.

Images of the Steuergerät Pin Belegung and the 3-pole VP37 connector (before the renewal of both cables)

Quote:

Due to improper handling of the 12 Volt power supply on the light machine, the thick cable was able to temporarily come into contact with the VP37 pump housing. A brief hiss, and there was a slight smell coming from the connector of the VP37 (3-pole).

How can one achieve this?
hg
Herbert

If a hobby mechanic wants to be helpful and assist you, but does NOT disconnect the battery!