I have a 2007 VW Touareg 3.0 TDI, BKS engine whose Exhaust Gas Temperature values (Read under Measuring Value Blocks 102.1 and 102.2) are as follows:

  1. 102.1 fixed at a constant 551.0C

  2. 102.2 fixed at a constant -53.1C

Regardless of running conditions, be it at idle, engine off with consumer electrics ON or on the road. These values do not change.

Is this normal behavior, or should I have the exhaust temperature sensor G235 inspected and / or changed?

Note that my machine has the DPF gutted and deleted from the ECU mapping, and the DPF sensor(s) all removed.

Any pointers?

  • I don't know enough about these systems to answer the question, but I'm wondering if what you're reading is actually the max and min values which these could be and not what the system is seeing. It seems to me if the EGT's were beyond either of these values the system might throw a code. If that isn't the case and you're reading things correctly, then there is most likely a problem with the sensor itself. Commented May 22, 2022 at 23:36
  • Hello @Pᴀᴜʟsᴛᴇʀ2 this is what I get via both VCDS and Diagzone Pro's diagnostics when I query the aforementioned Measuring Value Blocks (MVBs). The EGT appears "stuck" to these values and they don't update. Need to confirm if this is indeed normal. Commented May 22, 2022 at 23:39
  • Another point which leads me to what I'm saying is, if you are looking at the actual EGT value, you'd be looking at one cell, not two. Commented May 23, 2022 at 0:10


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