Spark Plug Problem: Electrical Fault Diagnosis

Hey everyone,

My Passat is giving me the following error:

Code:

Adresse 01: Motor    Steuergerät-Teilenummer: 038 997 016 K   Bauteil und/oder Version: R4 2,0L EDC G000SG  0092 1 Fehler gefunden: 17055 - Glühkerze Zylinder 1 (Q10): elektrischer Fehler im Stromkreis             P0671 - 000 -  -              Umgebungsbedingungen:                     Drehzahl: 0 /min                     Drehmoment: 204.0 Nm                     Geschwindigkeit: 0.0 km/h                     Last: 0.0 %                     Spannung: 11.63 V                     Binärwert: 00101100                     Temperatur: 0.0°C                     Binärwert: 00110000 Readiness: 0 0 1 0 1

We replaced the glow plug yesterday, but unfortunately, the problem is still there.

Does anyone have any ideas about this?

Sure, no problem. Here's the translation:

"Thank you in advance."

It's probably obvious, but has the error memory been cleared already? Otherwise, connect a multimeter and check where the problem lies.

Was ist mit der "richtigen" GK passiert? / Has the "correct" GK already been installed?

Best regards, Rainer.

Yes, it was the correct candle.

I cleared the memory, but after a diagnostic test of the actuators, the error reappeared in the memory, and then a few days later, the emissions warning light came on.

Okay, then we'll start measuring things and maybe swap some parts; hopefully the new one will work.

Are there any other typical mistakes that occur there?
How are the candles controlled? Directly from the main system (MSG), or does it have its own control unit for that purpose?

Possibly, the glow plug control unit is faulty.

The question is, what exactly does "electrical fault in the circuit" mean? It could indicate a failure of the main control unit, a short circuit to ground, or an open circuit.

Try using a different GSK and see what error message appears.

Best regards, Rainer.

*cough*

Yes, it's a little embarrassing, but I'm going to write it down anyway.

Upon inquiry, I was told that cylinder 1 is the one at the front near the timing belt, but that's actually cylinder 4.
Yesterday, I disconnected the connectors from both cylinder heads to the belt, and that's when I discovered that I had 3 "faulty" glow plugs.

Okay, so I guess I'll probably replace the spark plug on the rear cylinder, near the injection nozzle; that might solve the problem. *g*

Should I do them all at once? I've heard different opinions about it so far.

@Rainer, thanks again.

*cough*

Upon inquiry, I was told that cylinder 1 is the one at the front near the timing belt, but that's actually cylinder 4.

Just to reiterate, Cylinder 4 corresponds to the first timing belt pulley, correct?

Quote:

Should I do them all at once? I've heard different opinions about it so far.

Okay... I replaced all the glow plugs in my AJM engine a few days ago.

- Engine: 2 out of 4 defective.
- Glow plug heater: 3 out of 3 defective.

Generally speaking, I've found that in almost every vehicle, at least two components have failed after approximately 180,000 km or 5-8 years, and it's even possible for this to happen sooner.

My advice: if one fails, replace them all.

I only replaced it once at 70,000 km (although it was a 5-volt spark plug, specifically the GE 100 for a Touran).

vagtuning wrote:

Benni wrote: *cough* Upon inquiry, I was told that cylinder 1 is the one at the front near the timing belt, but that's actually cylinder 4. Just to reiterate, Cylinder 4 = the first timing belt – is that correct?

That's what the error memory told me when I removed the spark plug connectors (specifically, the two front ones, as they were easiest to reach).

Then cylinders 1, 3, and 4 were identified as faulty.
I'd be happy to test that again.