Audi A6: P2002 Error Code & Fixes

Hello forum,

"I'm having a problem with the Audi mentioned where the "Particle Filter" message constantly appears on the display, and it frequently goes into limp mode. The error codes indicate issues with the oxygen sensor, turbocharger control, mass airflow sensor, and a full particle filter."

"After that, I sent the filter to DPF24, and they cleaned it. Now, I'm always getting the P2002 error code for "Particle Filter Bank 1" (this error wasn't present before the cleaning). I temporarily replaced the DDG sensor. The adaptation values cannot be reset with VCDS. I've attached some data showing the filter loading values and the sensor pressure readings. Where else could I look for the problem?"

I drove it again (approximately 50 km), and during that time, it went into emergency mode three times. Now, the following errors are stored in the system:

VCDS
The Windows-based VAG/VAS emulator runs on Windows 10 x64.
Version: DRV 18.9.1
shop.dieselschrauber.org
Dealer/Workshop name:
Company number: 000 00000
Self-diagnosis protocol.
Saturday, August 10, 2019, 17:47:37:47605
Vehicle Identification Number: License Plate Number:
Mileage:
Repair order:
Control unit part number: 4F2 910 402 E, Hardware version: 4F0 907 401 B.
Component and/or version: 2.7L V6 TDI G000SG 0010
Encoding: 0011322
Operating number: WSC 54831 001 1048576
VCID: 2171C8D3F8701F42F2-8074

5 error codes found:

004472 - Linear lambda probe / pump current.
P1178 - 000 - Interruption - Occasional/Sporadic.
Environmental conditions:
Error status: 00100000
Error priority: 0.
Error frequency: 1.
Lost counter: 255
Mileage: 254,603 km
Time: 0.
Date: 2019-08-10
Time: 17:19:08
Environmental conditions:
Speed: 2058 RPM.
Torque: 132.6 Nm.
Speed: 71.7 km/h
Touch ratio: 20.9%
Air mass/exposure time: 423.0 mg/H.
(no unit): 0.90
(no unit): 8.0

008194 - Particle filter, bank 1.
P2002 - 001 - Malfunction - Intermittent.
Environmental conditions:
Error status: 00100001.
Error priority: 0.
Error frequency: 2.
Lost counter: 255
Mileage: 254,604 km
Time: 0.
Date: 2019-08-10
Time: 17:21:05
VCDS
Self-diagnosis protocol.
Control unit part number: 4F2 910 402 E.
Environmental conditions:
Speed: 1953 RPM.
Torque: 436.8 Nm.
Speed: 67.2 km/h
Temperature: 609.0 °C
Temperature: 584.1 °C
(no unit): 1.0
Temperature: 30.6°C

013128 - Control unit for exhaust turbocharger 1 (J724).
P3348 - 004 - Electrical fault - Intermittent.
Environmental conditions:
Error status: 00100100
Error priority: 0.
Error frequency: 5.
Lost counter: 255
Mileage: 254605 km
Time: 0.
Date: 2019-08-10
Time: 17:21:22
Environmental conditions:
Speed: 1827 RPM.
Torque: 132.6 Nm.
Speed: 44.8 km/h
Temperature: 84.6°C
Touch ratio: 61.2%
Voltage: 13.76 V
Touch ratio: 12.6%

000257 - Mass Air Flow Sensor (MAF) (G70)
P0101 - 002 - Implausible signal - Intermittent.
Environmental conditions:
Error status: 00100010
Error priority: 0.
Error frequency: 1.
Lost counter: 255
Mileage: 254,606 km
Time: 0.
Date: 2019-08-10
Time: 17:22:44
Environmental conditions:
Speed: 1659 RPM.
Torque: 0.0 Nm
Speed: 93.0 km/h
Touch ratio: 80.9%
Voltage: 13.91 V
Pressure: 1213.8 mbar.
Air mass/exposure time: 687.4 mg/H.
VCDS
Self-diagnosis protocol.
Control unit part number: 4F2 910 402 E.

000565 - Charge pressure control.
P0235 - 001 - Control limit exceeded - Warning light ON.
Environmental conditions:
Error status: 11110001
Error priority: 0.
Error frequency: 1.
Lost counter: 255
Mileage: 254,623 km
Time: 0.
Date: 2019-08-10
Time: 17:35:07
Environmental conditions:
Speed: 4074 RPM.
Torque: 347.1 Nm.
Speed: 100.8 km/h
Pressure: 2131.8 mbar.
Pressure: 1519.8 mbar.
Air mass/exposure: 646.3 mg/H.
Temperature: 55.8°C
Readiness: 1 1 0 0 0

Hi,

Have the cables to the sensors and actuators in question already been checked for damage caused by rodents or chafing?

At the very least, something is definitely wrong with the oxygen sensor.

Best regards, Rainer.

Hello,

The issue has been resolved; it was the right intercooler hose that had very small holes (possibly caused by a rodent).
The "oxygen sensor (mixture too rich)" error has appeared three times, so I'm going to replace the sensor as well.

Thank you for your support.

Best regards, Bernd.

"0.00 ash content at 250,000 km. Who messed with that? Don't set it to zero completely. I can't imagine that there won't be any ash left in the DPF after cleaning (if that even works)."

An Audi mechanic worked on it because the particulate filter was full, and he tried to fix it, but unfortunately, he couldn't.

Sure, that's possible. Use the adaptation channel labeled "Initialization of Particle Filter" or something similar.
(When a diesel particulate filter is fully clogged, it should not be reset to 0 km ).
hg
Herbert.

Herbert wrote:

Of course, that's possible. Use the adaptation channel called "Initialization Particle Filter" or something similar. (When a diesel particulate filter is fully clogged, it should not be reset to 0 km ). hg Herbert

.

Hello,

Bei den V6 TDI´s 2,7/3,0 im A6 4F/VW-Phaeton/Tuareg Generation 1 bis zum 4G-Model Bzw Mj 2011 geht das nicht. Okay, then.
This model series simply doesn't offer the option to adjust the Ash content value, unlike many 4-cylinder TDI engines.
There are only two options available: start emergency regeneration and reset the ash accumulation value. This will set the value to 0 initially, and then it will begin calculating as if from 0 km / new.

Therefore, it's crucial to be aware of what you're doing with this engine series, because there's no going back.

Regards, Mpire.

Hello everyone, can anyone tell me if and how you solved this problem?

Unfortunately, I'm experiencing the same problem.

Best regards,
Tobias