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B1441

B1441 - Device Ignition OFF, RUN, CRANK Circuit Short

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Ignition Switch
  • Ignition Switch harness is open or shorted
  • Ignition Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)
  What does this mean?

Tech notes

DTC B1441 01 Device Ignition OFF, RUN, and CRANK Circuit Short to Battery
DTC B1441 06 Device Ignition OFF, RUN, and CRANK Circuit Short to Ground or Open
  What does this mean?

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B1441 Description

The vehicle Power Mode Master (PMM) is the Body Control Module (BCM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination of the power mode. The PMM receives the ignition switch signals, and additionally a reference voltage signal from the BCM, through the ignition switch, and back to the BCM. There are redundancies within the PMM system that can allow operation of certain subsystems when there are faults in the ignition switch circuits. Other information such as serial data input from other modules and DTCs is also used to determine what power mode signals and information is transmitted by the PMM. The BCM logic uses all this information to identify the operator's desired power mode and activate specific discrete signals, and serial data messages for the operation of different subsystems as necessary. Other modules which have switched voltage inputs may operate in a default mode if the PMM serial data message does not match what the individual module can detect from its own connections.

The PMM will activate relays and other direct outputs of the PMM as needed according to the calculated power mode. Some relays controlled by the BCM are switched ignition voltage outputs that are pass through circuits within the BCM directly from the ignition switch. If these circuits short to ground, the B+ circuit fuse to the ignition switch will open.

OBDII Code B1441 - Device Ignition OFF, RUN, CRANK Circuit Short - AutoCodes.com

B1441 Information for specific makes

  • B1441 BUICK Device Ignition OFF, RUN, CRANK Circuit Short
  • B1441 CADILLAC Device Ignition OFF, RUN, CRANK Circuit Short
  • B1441 CHEVROLET Device Ignition OFF, RUN, CRANK Circuit Short
  • B1441 GMC Device Ignition OFF, RUN, CRANK Circuit Short
  • B1441 LEXUS Air Mix Damper Control Servo Motor Circuit Passenger Side
  • B1441 PONTIAC Device Ignition OFF, RUN, CRANK Circuit Short
  • B1441 SATURN Device Ignition OFF, RUN, CRANK Circuit Short
  • B1441 SCION Air Mix Damper Control Servo Motor Circuit Passenger Side
  • B1441 TOYOTA Air Mix Damper Control Servo Motor Circuit Passenger Side

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B1441 Comments

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