B1428 - Ignition Switched Power Run/Crank Relay Circuit

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

  • Faulty Ignition Switched Power Run/Crank Relay
  • Ignition Switched Power Run/Crank Relay harness is open or shorted
  • Ignition Switched Power Run/Crank Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

Possible symptoms

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

B1428 Description

The Body Control Module (BCM) controls the Run/Crank relay through the run/crank relay coil control circuit by applying voltage to the circuit. The Run/Crank relay is energized when the ignition switch is in ON or START, or when a remote start is requested. The OBDII codes set when the BCM detects a short to ground in the run/crank relay coil control circuit.
OBDII Code B1428 - Ignition Switched Power Run/Crank Relay Circuit - AutoCodes.com

B1428 Information for specific makes

  • B1428 BUICK Ignition Switched Power Run/Crank Relay Circuit
  • B1428 CADILLAC Ignition Switched Power Run/Crank Relay Circuit
  • B1428 CHEVROLET Ignition Switched Power Run/Crank Relay Circuit
  • B1428 GMC Ignition Switched Power Run/Crank Relay Circuit

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B1428 Comments

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