Question about Chevrolet TrailBlazer

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03 Chevy Trail Blazer Trouble code PO105 Someone has replaced lots of parts on this vehicle i.e. cam sensor, crank sensor, map sensor, o2 sensor, can not drive truck, no power, will not rev over 2500rpm

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  • jimmythehook Jun 17, 2009

    i have replaced map sensor checked fuel pressure and droped exhaust still same

  • Richard Scordino May 11, 2010

    check converter for obstructions?

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  • Master
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P0105 is MAP (Manifold Absolute Pressure) or BARO (Barometric pressure) circuit malfunction

Posted on Jun 17, 2009

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  • Master
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HI, this code represents a failed MAP sensor. the circuit is malfunctioning(Insufficient Activity).

Replace the MAP sensor asap if possible.

The MAP sensor(Manifold absolute pressure sensor), is located on the back side of the intake manifold. on top.







Posted on Jun 17, 2009

  • 1 more comment 
  • Michael Masters
    Michael Masters Jun 17, 2009

    Ok, if you have received the code once again after the map replacement, this will signal that you did not replace the map correctly or, the wires connected to the map are damaged.

  • Michael Masters
    Michael Masters Jun 17, 2009

    this code only concerns the map sensor. that it. check the map housing and wires for flaws.

  • Michael Masters
    Michael Masters Jun 17, 2009

    I would also check the inspect the intake manifold gasket for leaks and worn corner as well. this can cause map sensor malfunctions.

    Good luck:)


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