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D6T coding

05dearl ยท 2025-04-05 08:00

I have a 2008 D6T with a C9. Coding 036 172.1 and 172.2. Book only shows 172.3 172.4 which is intake manifold temp sensor. Any ideas?

Replies4
  1. #1Zewnten2025-04-05 08:39

    Serial number

  2. #2Nige2025-04-05 11:06

    FMI 01 is "Low" - An input that is still functioning but is sending a signal below the acceptable limit of the parameter in question. (The intake manifold temp sensor in this case) FMi02 is "Data Erratic, Intermittent, or Incorrect" - Erratic or intermittent data includes all measurements that change at a rate that is not considered possible in the real world condition and must be caused by either improper operation of the measuring device or the connection between said device and the ECM. This could be the sensor but could just as easily be a corroded/damp/dirty electrical connection somewhere. Need a S/N to identify the correct electrical schematic for your machine.

  3. #305dearl2025-04-05 23:23

    Thanks. Serial number: LAY00858.

  4. #4Nige2025-04-06 11:22

    Check your message inbox. TBH the troubleshooting procedure for either FMI03 or FMI04 that you have in your manual will work pretty well to test the wiring between the air intake temperature sensor and the Engine ECM.