AutoCodes – Generic – C122B

C122B Code - Brake Booster Pedal Force Switch Circuit Performace

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Brake Booster Pedal Force Switch. Common causes include Faulty Brake Booster Pedal Force Switch, Brake Booster Pedal Force Switch harness is open or shorted, Brake Booster Pedal Force Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C122B indicates Brake Booster Pedal Force Switch Circuit Performace.
Common causes: Common causes include Faulty Brake Booster Pedal Force Switch, Brake Booster Pedal Force Switch harness is open or shorted, Brake Booster Pedal Force Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,130

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C122B Description

The Anti-Lock Brake System (ABS) Module monitors the Brake Booster Pedal Force Switch. The ABS Module sets the OBDII code when the Brake Booster Pedal Force Switch is not to factory specifications.

OBDII Code C122B - Brake Booster Pedal Force Switch Circuit Performace - AutoCodes.com — C122B Code - Brake Booster Pedal Force Switch Circuit Performace

What does this mean?

What are the Possible Causes of the DTC C122B?

Faulty Brake Booster Pedal Force Switch
Brake Booster Pedal Force Switch harness is open or shorted
Brake Booster Pedal Force Switch circuit poor electrical connection
Faulty Anti-Lock Brake System (ABS) Module

How to Fix the DTC C122B?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C122B code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C122B code?

Need more information on how to fix the C122B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C122B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C122B Chrysler — Brake Booster Pedal Force Switch Circuit Performace
C122B Dodge — Brake Booster Pedal Force Switch Circuit Performace
C122B Jeep — Brake Booster Pedal Force Switch Circuit Performace

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C122B Code

1. What are the common symptoms of OBDII code C122B (Brake Booster Pedal Force Switch Circuit Performance)?

- Common symptoms include the illumination of the check engine light, issues with brake pedal feel or response, and potential loss of power brakes.

2. What are some possible causes of OBDII code C122B?

- Possible causes include a faulty brake booster pedal force switch, wiring issues in the circuit, a malfunctioning brake booster, or a problem with the brake pedal position sensor.

3. How can I diagnose the cause of OBDII code C122B?

- Diagnosis typically involves using a scan tool to read the code, inspecting the brake booster pedal force switch and related wiring for damage or corrosion, and testing the switch's functionality.

4. Can I still drive my vehicle with OBDII code C122B present?

- It is not recommended to drive your vehicle with this code present, as it can affect the proper functioning of the brake system and compromise safety. It is best to address the issue promptly.

5. How can I repair OBDII code C122B?

- Repairing this code may involve replacing the brake booster pedal force switch, repairing any damaged wiring, addressing issues with the brake booster or pedal position sensor, and clearing the code with a scan tool.

6. Are there any DIY tips for troubleshooting OBDII code C122B?

- DIY tips may include visually inspecting the brake booster pedal force switch and wiring for any obvious signs of damage, ensuring proper connections, and checking for any loose or disconnected components.

7. Is it necessary to visit a mechanic for OBDII code C122B?

- While some DIY troubleshooting may be possible, it is recommended to have a professional mechanic diagnose and repair OBDII code C122B to ensure the issue is properly addressed and the brake system functions correctly.

8. Can OBDII code C122B be intermittent?

- Yes, this code can sometimes be intermittent, depending on the underlying cause. It is important to address intermittent issues promptly to prevent potential safety hazards.

9. How long does it typically take to repair OBDII code C122B?

- The repair time can vary depending on the specific cause of the code and the extent of the issue. It may take anywhere from an hour to several hours to diagnose and repair OBDII code C122B.

10. Is it safe to reset the check engine light after repairing OBDII code C122B?

- Yes, once the underlying issue causing OBDII code C122B has been repaired, it is safe to reset the check engine light using a scan tool to clear the code and ensure proper functioning of the brake system.