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VW T5 TDI: No Oil Temp, Only Emergency Regeneration

 
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Hannes_D



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Post29-01-2026, 16:32    Subject: VW T5 TDI: No Oil Temp, Only Emergency Regeneration Quote

VW T5 1.9 TDI, Engine Code: BRR, Gearbox Code: HCY - Manufactured in 05/2006, Mileage: 163,000 km.

Hello fellow diesel mechanics,

For the vehicle mentioned above, the DPF (Diesel Particulate Filter) can only be cleaned using a forced regeneration process. A regular regeneration is not possible.
initiated. The ash content is stated to be 26 grams.

In VCDS, under "Advanced Measurement Channels," you will find the oil temperature reading.
A value of -0.9°C was displayed continuously.
Yesterday, the workshop tried a different sensor. However, it produced the same result. The positive and ground connections are reaching the connector. The oil level is indicated as approximately 31 mm.

My question is: Is the oil temperature value required for a normal regeneration start? The workshop foreman says that only the coolant temperature value is necessary.

The measured differential pressure value in the DPF is 300 mbar. However, according to VCDS, it is much higher, at approximately 900 mbar.

Thank you in advance for your assistance.

Greetings.
Hannes D. from N.


Translated on 12-08-2026, 2:12.
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Post29-01-2026, 16:41    Subject: VW T5 TDI: No Oil Temp, Only Emergency Regeneration Translating...

[Translating...]

Hi, sehe hier keine Messwerte... auch nicht wie gemessen wurde.

Prinzipiell:
/viewtopic.php?t=29120

LG
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Hannes_D



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Post29-01-2026, 17:30    Subject: VW T5 TDI: No Oil Temp, Only Emergency Regeneration Translating...

[Translating...]

Hallo,

der Differenzdruck 300mbar wurde durch die Werkstatt mit externem Messgerät festgestellt.
Die anderen Werte mit VCDS.
Wie soll ich die weiteren Werte am einfachsten bereitstellen?

Bitte kurze Info. Danke.

Gruss Hannes D. aus N.
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Hannes_D



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Post29-01-2026, 19:09    Subject: VW T5 TDI: No Oil Temp, Only Emergency Regeneration Translating...

[Translating...]

Hallo,

der Differenzdruck 300mbar wurde durch die Werkstatt mit externem Messgerät festgestellt.
Die anderen Werte mit VCDS.
Wie soll ich die weiteren Werte am einfachsten bereitstellen?

Bitte kurze Info. Danke.

Gruss Hannes D. aus N.
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Post29-01-2026, 20:42    Subject: VW T5 TDI: No Oil Temp, Only Emergency Regeneration Translating...

[Translating...]

Wenn das Motorsteuergerät 900mbar Differenzdruck misst und eine externe Druckanzeige sieht nur 300mbar, ist der Fehler doch klar.

Messwerte:
/viewtopic.php?t=12979
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