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Thread: Error p1202

  1. #1
    rxp1972's Avatar
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    Error p1202

    Can someone tell me what is this error?
    Oil tank pressure switch impausible or blow-by valve still closed P1202


  2. #2
    rxp1972's Avatar
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    Anyone please?

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    Moderator beerdart's Avatar
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    Possible cause:
    Damaged oil pressure switch, blow-by valve failure, damaged circuit wires, damaged connector or damaged ECM pins.
    Service action:
    Check for 1.27 to 2.47 ohms between terminals.
    Check if TOPS is connected to wiring harness.
    Check resistance at 0 RPM and above 3500 RPM. At high RPM the resistance should be close to 0 ohm.
    Check for 12 volts on pin 1 of the blow-by valve.

  4. #4
    rxp1972's Avatar
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    Thank you

  5. #5
    Boost addict hotbird's Avatar
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    check the wire plug in on the pressure sensor. it only has 1 wire and it can be installed upside down so that the wire makes no connection to the sensor.

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