AutoCodes – Generic – C122C

C122C Code - Brake Booster Pedal Force Switch Circuit Supply Voltage

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
C122C indicates Brake Booster Pedal Force Switch Circuit Supply Voltage.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,372
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 27, 2020
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Code C122C 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 C122C - Brake Booster Pedal Force Switch Circuit Supply Voltage - AutoCodes.com
C122C Code - Brake Booster Pedal Force Switch Circuit Supply Voltage

What are the Possible Causes of the DTC C122C?

  • 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 C122C?

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 C122C 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 C122C code?

Need more information on how to fix the C122C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C122C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • C122C Chrysler β€” Brake Booster Pedal Force Switch Circuit Supply Voltage
  • C122C Dodge β€” Brake Booster Pedal Force Switch Circuit Supply Voltage
  • C122C Jeep β€” Brake Booster Pedal Force Switch Circuit Supply Voltage
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 C122C Code

1. What are common symptoms of OBDII code C122C (Brake Booster Pedal Force Switch Circuit Supply Voltage)?

- Common symptoms include the brake warning light illuminating on the dashboard, inconsistent brake pedal feel, and potential loss of power brakes.

2. What are possible causes of OBDII code C122C?

- Possible causes include a faulty brake booster pedal force switch, damaged wiring or connectors in the circuit, low brake fluid level, or a malfunctioning brake booster.

3. How can I diagnose the source of OBDII code C122C?

- Use a diagnostic scanner to retrieve the code and check for any other related codes. Inspect the brake booster pedal force switch and its wiring for damage, and ensure the brake fluid level is adequate.

4. Can I still drive my vehicle with OBDII code C122C present?

- It is not recommended to drive the vehicle with this code present, as it may affect the performance of the braking system. Immediate attention and repair are advised.

5. How can I repair OBDII code C122C myself?

- If you have experience with automotive repairs, you can start by inspecting the brake booster pedal force switch, checking the wiring for any issues, and ensuring the brake fluid level is correct. However, professional diagnosis and repair may be necessary.

6. Is it safe to ignore OBDII code C122C?

- Ignoring this code can lead to potential brake system malfunctions, compromising the safety of your vehicle. It is recommended to address the issue promptly.

7. Can a low brake fluid level cause OBDII code C122C?

- Yes, a low brake fluid level can trigger this code as it may affect the proper functioning of the brake booster pedal force switch.

8. How much does it typically cost to repair OBDII code C122C at a mechanic?

- The cost of repairing this code can vary depending on the root cause of the issue and the labor rates of the mechanic. It is advisable to obtain estimates from different repair shops.

9. Will resetting the OBDII code C122C make it go away permanently?

- Resetting the code without addressing the underlying issue will not make it go away permanently. The problem must be diagnosed and repaired to prevent the code from reoccurring.

10. Can OBDII code C122C be intermittent or sporadic?

- Yes, this code can be intermittent, especially if the issue is related to a loose connection or a temporary fault. It is important to address intermittent codes promptly to prevent potential safety risks.

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