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Thread: 2014 Silverado 6.2L - 3 bar MAP installed, Scanner not reading MAF or MAP

  1. #1
    Potential Tuner
    Join Date
    May 2014
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    4

    2014 Silverado 6.2L - 3 bar MAP installed, Scanner not reading MAF or MAP

    Swapped with a fresh build Low boost LT4. installed a 3 BAR map, but the scanner is not logging MAF or MAP. Possible culprit/ solutions?

    Also, I have the rear 02 codes off, but I am still getting a 420 and 430 code.

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
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    8,504
    Re-poll for supported parameters while connected to the truck, see if they come back.

    If those two codes say "permanent", they don't just go away. It won't affect anything if you have the codes for the rear o2 sensors, cat codes and the cat test/post o2 sensor test turned off. ( not all computers have both of the last two).
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.