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“Pre-code” is a term I just invented to describe a situation where my Volvo has determined that something is irregular, but before it logs a diagnostic trouble code (DTC). Also, by definition, a pre-code is something that happens before a Check Engine light, since a DTC is a requirement of a Check Engine light.

I can tell when my 850 T5 is in a pre-code condition because it cuts my 850’s boost in half. I can easily feel this when accelerating, and can measure it because I installed a boost gauge in my Volvo 850.

8 responses to “Pre-code”

  1. see this official website says:

    Thanks for sharing your thoughts on pre-code.

  2. Boyce says:

    So wish to always get updateԁ great ωeblog!

  3. Harvey says:

    Currently it seems like WordPress is the preferred blogging platform out there right now.
    (from what I’ve read) Is that what you are using on your blog? Regards!

  4. tomasz says:

    kod radio volvo v70 nr.VO0690 W3039160C

  5. David says:

    I had scan Volvo 1999 V70 and was saved in memory P1081;P1620;P1017 What the code mean I can not find in Book

  6. charity says:

    I am trying to get my radio code for my Volvo s70 can anybody help me

  7. 4 says:

    Hi, after reading this awesome piece of writing i am as well happy to share my experience here with

  8. Dan says:

    My s60 2001 all wheel drive is beeping when i start it up and the numbers 067 come up on my console….what does this mean?

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