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AutoCodes - Generic - B2122

B2122 Code - Ignition Run Control Circuit Low

- Code Popularity: 7,409 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By - Updated Sep 17, 2019
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|Code B2122 Possible Causes

  • Faulty Run Relay
  • Run Relay harness is open or shorted
  • Run Relay circuit poor electrical connection
  • Faulty Front Control Module (FCM)

|How do I Fix the Code B2122?

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.

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|What is the Cost to Diagnose the Code B2122?

Labor: 1.0

The cost of diagnosing the B2122 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 B2122 Possible Symptoms?

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

|Code B2122 Description

The Front Control Module monitors the Ignition Run Control Circuit. The Front Control Module will set this Diagnostic Trouble Code (DTC) within 500ms if the Run Relay Control Circuit voltage is open or shorted to ground.

OBDII Code B2122 - Ignition Run Control Circuit Low -
B2122 Code - Ignition Run Control Circuit Low

|Need More Information on the B2122 Code?

Need more information on how to fix the B2122 code? Get Access to Factory Service Manuals

|Information for Specific Makes

|Need Help with the B2122 Code?

Get the B2122 code diagnosed by a professional: Find a repair shop in your area

|Code B2122 comments

Help us improve 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 B2122 code? Have you replaced any parts?
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