Mismatched mileage readings, P0204 injector circuit malfunction

Hi,

It's a Volkswagen Golf TDI, 1.6 liter engine, manufactured in 2010, with 122,000 kilometers (approximately 76,000 miles) on the odometer. It was purchased from a dealer 13 months ago with 113,000 kilometers (approximately 70,000 miles).

Today, he stayed in bed.

Suddenly went into emergency mode. Restart possible, but the engine is running very erratically. Error entry:

9840 - Fuel injector, cylinder 4 (N33)

P0204 00 [167] Electrical circuit fault.

A complete log can be provided later upon request.


Are there any experiences with this? Is it a cable break, or something more serious? Are there any recommendations for further diagnosis?

The second oddity I noticed is the discrepancy in the mileage readings between the combination instrument and the error log in VCDS.

The error message above contains the following details: 122229 km, while the display in the instrument cluster shows 122242 km, which is a discrepancy of 13 km. Is there a reasonable and "good" explanation for this, or is it an indication of manipulation?

Best regards,

had

Hi,

I actually thought that the engine control unit would read the mileage from the instrument cluster when error entries are made, but okay. On its own, I would say there is no sufficient indication of mileage tampering.

Before doing anything with the injector, of course, check the wiring and connectors.
If everything seems okay, disconnect the plugs from the injector and the one next to it. Then, use a multimeter to measure the resistance between the injector terminals and from the terminals to ground (for the injector). You might notice something when comparing the readings. If possible, a capacity measurement comparing both injectors would also be beneficial.

Background story:
Okay, I'm ready. Please provide the German text you want me to translate.

Best regards, Rainer.

Hi,

Measurements showed a resistance of approximately 220 kOhms in the healthy cylinder, while the affected cylinder showed a resistance of 20 kOhms.
Can the vehicle still be moved like this, or am I damaging the engine?

Best regards,
had

Quote:

Can the vehicle still be moved like this, or will it damage the engine?

You can't tell from a distance. If the engine sounds different than usual, I would drive slowly to the workshop.

Best regards, Rainer.