OBDII Code List

B0403 SUBARU - E/G Request NG

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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B0403 SUBARU Possible Causes

  • Incorrect Immobilizer Key
  • Immobilizer Key Not Programmed
  • Faulty Body Integrated Unit (BIU)

First diagnose B0403 SUBARU code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the B0403 SUBARU code

    Labor: 1.0

    The cost of diagnosing the B0403 SUBARU code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

B0403 SUBARU Possible Symptoms

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

B0403 Subaru Description

The Immobilizer system performs the starter relay control. The Body Integrated Unit (BIU) detects the inconformity of reference code, immediately output the starter relay cut signal to Engine Control Module (ECM), and then ECM stops the starter relay operation. In this case, engine does not start, and DTC is not recorded in ECM. Check that the engine does not start on the DTC of body integrated unit.
OBDII Code B0403 Subaru -  E/G Request NG -

B0403 SUBARU More Information

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