AKF Stuttering: No Gas Intake - Troubleshooting

Translated on 26-10-2026, 13:17.

Hello!

Since I'm new here, I'd like to briefly introduce myself:
I drive a 2001 A8 3.3 TDI S-Line with 104,000 km on the odometer, and I'm from Luxembourg.

"Recently, the AKF (presumably a piece of equipment) has been malfunctioning and is reporting the following errors:"

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VAG-COM Version: DRV 311.3-S

Control unit part number: 4D0 907 409 A.
Component or version: 3.3l/4VTEDC G400AG D04
Software Coding: 00016
Workshop Code: WSC 02314

5 errors found:
17650 - Fuel injector, cylinder 6 (N84), interruption.
P1242 - 35-10 - - - Interrupted.
17649 - Fuel injector, cylinder 5 (N83), interruption.
P1241 - 35-10 - - - Interrupted.
17601 - Fuel pressure sensor (G247) - Open circuit/Short circuit to positive.
P1193 - 35-00 - -
17603 - Fuel pressure control valve - Open circuit/Short to ground.
P1195 - 35-00 - -
19561 - Switching valve for throttle control (N239) - Short circuit to ground / Open circuit.
P3105 - 35-10 - - - Interrupted.

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Where do you think I should start the troubleshooting? Which measurements would you recommend I take to identify the cause of the problem?

Thank you for any advice!

Rick.

Translated on 26-10-2026, 13:20.

Hi,

I would start by examining the wiring harness starting from the control unit, checking all the connectors and cables, and seeing if the control unit has gotten wet.

Best regards, Rainer.

Translated on 26-10-2026, 13:21.

Hello,

Thanks for the tip, Rainer. The workshop has identified the cause of the problem.
The error messages related to fuel pressure were triggered by a leak at a connection on a fuel line. Inside the "V" of the engine block, the diesel was 2 cm high

.

An injector is faulty, and all 8 need to be replaced.

The repair, including the replacement of the control arms, will cost almost 5,000 euros.

My question is: Are there any alternatives to the expensive original parts for the injectors? I haven't been able to find any so far.

Best regards,
Rick.

Guest Free account, no CAN development support

Why should they all be replaced?
They should be able to replace the one that's defective.

Translated on 26-10-2026, 13:23.

Hello,

Unfortunately, all 8 of them need to be replaced.

All 8 injectors need to be replaced, as there is a risk of damage to the other injectors later on.

If injectors with index H were already installed in the vehicle as part of a previous repair, only the defective injector needs to be replaced.

Best regards,
Rick.