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OBD II Fault Code P1900 :

Description of Fault code P1900

ATFP-RELAY CONTROL CIRCUIT HIGH

Possible failuer P1900

  • ATFP relay failure ON
  • The control line (for the ATFP) is shorted.
  • ATFP driver failure

Diagnostic Procedure using AutoHex II Scan Tool

  • A malfunction is detected when the voltage increases without A ON command for at least 5 seconds.
  • ATFP driver monitors and detects a malfunction. If the ATFP driver detects the malfunction, it will send the failure results to PCM.

Test Conditions using AutoHex tester

  • Turn the IG switch ON (II), and wait 10 seconds.

Clear Fault codes Conditions

  • A malfunction is detected when the voltage increases without A ON command for at least 5 seconds.
  • ATFP driver monitors and detects a malfunction. If the ATFP driver detects the malfunction, it will send the failure results to PCM.

MIL Status

  • America/Canada Spec OFF

Programming BMW F Series


Note:

  • AutoHex II is a professional Auto diagnostic.
  • This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
    To get the accurate fault code description you may use AutoHex II

More Fault codes:

OBD II Fault Code P1901
OBD II Fault Code P1902
OBD II Fault Code P1903
OBD II Fault Code P1904
OBD II Fault Code P1905
OBD II Fault Code P1906
OBD II Fault Code P1907
OBD II Fault Code P1908
OBD II Fault Code P1909
OBD II Fault Code P190A
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