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AutoCodes - Generic - B1400

B1400 Code - Control Module Supply Circuit 2

- Code Popularity: 14,053 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Jul 11, 2022
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|Code B1400 Possible Causes

  • Low battery voltage
  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

|How do I Fix the Code B1400?

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.

Does your Car have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B1400?

Labor: 1.0

The cost of diagnosing the B1400 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.

|What are Code B1400 Possible Symptoms?

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

|Code B1400 Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Damage to components, and incorrect data can occur when the voltage is out of range. The vehicle has multiple Control Modules that will set this Diagnostic Trouble Code (DTC).

OBDII Code B1400 - Control Module Supply Circuit 2 - AutoCodes.com
B1400 Code - Control Module Supply Circuit 2

|Need More Information on the B1400 Code?

Need more information on how to fix the B1400 code? Get Access to Factory Service Manuals

|Information for Specific Makes

|Need Help with the B1400 Code?

Get the B1400 code diagnosed by a professional: Find a repair shop in your area

|Code B1400 comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B1400 code? Have you replaced any parts?
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