AutoCodes - OBDII Code List - B0403 SUBARU

B0403 SUBARU - E/G Request NG

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

B0403 SUBARU Possible Causes

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

How do I fix code B0403 SUBARU?

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.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

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.

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 - AutoCodes.com

More Information

Need more information on how to fix the B0403 SUBARU code?
Get Access to Factory Service Manuals

Need more help?

Get the B0403 Subaru code diagnosed by a professional: Find a repair shop in your area

Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the B0403 Subaru code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧