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Engine-Codes – Generic – B122C

B122C Code - PTS Sensor 7 Circuit Low

Quick Answer

The B122C diagnostic trouble code (DTC) indicates an issue with the PTS (Park Assist) sensor 7 circuit being lower than the expected value. Common causes include Damaged wiring or connectors leading to the PTS sensor 7, Faulty PTS sensor 7, Corrosion or debris affecting sensor performance. 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
B122C indicates PTS Sensor 7 Circuit Low.
Common causes
Common causes include Damaged wiring or connectors leading to the PTS sensor 7, Faulty PTS sensor 7, Corrosion or debris affecting sensor performance.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B122C Description

The B122C diagnostic trouble code (DTC) indicates an issue with the PTS (Park Assist) sensor 7 circuit being lower than the expected value. The PTS sensor is a component of the vehicle's parking assist system, which helps drivers navigate tight parking spots by alerting them to obstacles in their path. When the sensor circuit is reading a low value, it can affect the accuracy of the parking assist system and may lead to false warnings or failure to detect obstacles.

OBDII Code B122C - PTS Sensor 7 Circuit Low
B122C Code - PTS Sensor 7 Circuit Low

Common Causes of B122C

  1. Damaged wiring or connectors leading to the PTS sensor 7
  2. Faulty PTS sensor 7
  3. Corrosion or debris affecting sensor performance
  4. Issues with the vehicle's electrical system
  5. Water intrusion into the sensor housing

Symptoms of B122C

  1. Parking assist system not functioning properly
  2. False alerts or warnings while parking
  3. Difficulty detecting obstacles behind the vehicle
  4. Inconsistent performance of the parking assist system

How to Fix B122C

  1. Begin by inspecting the wiring and connectors leading to the PTS sensor 7 for any damage or corrosion. Repair or replace any damaged components.
  2. Check the sensor itself for any physical damage or signs of malfunction. Replace the sensor if necessary.
  3. Clear the DTC from the vehicle's computer using an OBD-II scanner.
  4. Test the parking assist system to ensure that the issue has been resolved and that the sensor is functioning properly.
  5. If the problem persists, consult a professional technician for further diagnosis and repair.

Cost to Fix B122C

The cost of repairing a PTS sensor 7 circuit low issue can vary depending on the specific cause of the problem and the vehicle's make and model. In general, replacing a faulty sensor or repairing damaged wiring can cost between $150 and $300, including parts and labor. Additional diagnostic time may be required to pinpoint the exact source of the issue, which can increase the overall repair costs. It is recommended to consult with a trusted auto repair shop for a more accurate estimate based on your vehicle's needs. Remember that labor rates can vary, so it's advisable to inquire about rates in your local area.

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Code B122C Information for Specific Makes

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 B122C Code

1. What are the common symptoms of OBDII code B122C (PTS Sensor 7 Circuit Low)?

- Common symptoms include malfunctioning parking assist sensors, intermittent or continuous beeping when reversing, and a disabled parking assist system.

2. What can cause the OBDII code B122C (PTS Sensor 7 Circuit Low) to trigger?

- The code can be triggered by a faulty parking sensor, damaged wiring or connectors, water intrusion, or issues with the parking assist module.

3. How can I diagnose the OBDII code B122C (PTS Sensor 7 Circuit Low)?

- Diagnosing the code involves visually inspecting the parking sensor and its wiring, testing the sensor's resistance, checking for water intrusion, and using a diagnostic scan tool to retrieve trouble codes.

4. Is it safe to drive with the OBDII code B122C (PTS Sensor 7 Circuit Low) activated?

- It is generally safe to drive with this code, but your parking assist system may not function properly, leading to an increased risk of minor collisions in tight parking spaces.

5. How do I repair the OBDII code B122C (PTS Sensor 7 Circuit Low)?

- Repair options include replacing the faulty parking sensor, repairing damaged wiring or connectors, ensuring proper sensor alignment, and clearing the trouble codes with a diagnostic tool.

6. Can I reset the OBDII code B122C (PTS Sensor 7 Circuit Low) without fixing the underlying issue?

- While you can clear the code temporarily, it is recommended to diagnose and repair the root cause to ensure the parking assist system functions correctly and to prevent future issues.

7. Are there any DIY tips for fixing the OBDII code B122C (PTS Sensor 7 Circuit Low)?

- DIY tips include carefully inspecting the sensor and wiring for visible damage, checking for loose connections, and consulting the vehicle's service manual for specific repair procedures.

8. Will the OBDII code B122C (PTS Sensor 7 Circuit Low) affect my vehicle's performance?

- This code typically does not affect the overall performance of the vehicle, but it may impact the functionality of the parking assist system and related safety features.

9. How much does it cost to repair the OBDII code B122C (PTS Sensor 7 Circuit Low)?

- The cost of repair can vary depending on the extent of the damage, the need for sensor replacement, and labor costs. It is recommended to obtain estimates from qualified technicians.

10. Can extreme weather conditions cause the OBDII code B122C (PTS Sensor 7 Circuit Low) to trigger?

- Yes, extreme weather conditions such as heavy rain or snow can lead to water intrusion in the parking sensor system, potentially triggering the code. Regular maintenance can help prevent this issue.

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