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Engine-Codes – Generic – B0961:21

B0961:21 Code - Parking Assist Rear Sensor Right Corner Circuit Incorrect Period

Quick Answer

The B0961:21 diagnostic trouble code indicates that there is an issue with the parking assist rear sensor located on the right corner of the vehicle. Common causes include Damaged wiring or connectors in the right rear sensor circuit, Faulty right rear sensor, Malfunctioning control module for the parking assist system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
B0961:21 indicates Parking Assist Rear Sensor Right Corner Circuit Incorrect Period.
Common causes
Common causes include Damaged wiring or connectors in the right rear sensor circuit, Faulty right rear sensor, Malfunctioning control module for the parking assist system.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code B0961:21 Description

The B0961:21 diagnostic trouble code indicates that there is an issue with the parking assist rear sensor located on the right corner of the vehicle. This sensor is responsible for detecting obstacles or objects in the vehicle's path when parking or maneuvering in tight spaces. The code specifically points to an incorrect period in the sensor's circuit, which can lead to inaccurate readings or a complete failure of the sensor.

OBDII Code B0961:21 - Parking Assist Rear Sensor Right Corner Circuit Incorrect Period
B0961:21 Code - Parking Assist Rear Sensor Right Corner Circuit Incorrect Period

Common Causes of B0961:21

  1. Damaged wiring or connectors in the right rear sensor circuit
  2. Faulty right rear sensor
  3. Malfunctioning control module for the parking assist system
  4. Water or debris intrusion affecting the sensor's performance
  5. Corrosion or rust on sensor components

Symptoms of B0961:21

  1. Parking assist system not functioning properly
  2. Inaccurate or erratic readings from the right rear sensor
  3. Warning lights or messages related to parking assist system on the dashboard
  4. Difficulty parking or maneuvering in tight spaces
  5. Increased risk of collisions while reversing

How to Fix B0961:21

  1. Begin by conducting a visual inspection of the right rear sensor, wiring, and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the continuity and voltage of the sensor circuit to identify any electrical issues.
  3. Replace the right rear sensor if it is found to be faulty or damaged beyond repair.
  4. Clear the diagnostic trouble code from the vehicle's system using a compatible scan tool.
  5. Test the parking assist system to ensure that the sensor is now functioning correctly and providing accurate readings.

Cost to Fix B0961:21

The typical repair costs for addressing the B0961:21 code can vary depending on the specific cause of the issue and the parts needed for the repair. In general, replacing a parking assist sensor can range from $100 to $300, while labor costs can add an additional $50 to $150. However, it is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It is advisable to consult with a professional technician for a more accurate cost estimate tailored to your specific situation.

What does this mean?

Tech Notes for B0961:21

B0961:01 Parking Assist Rear Sensor Right Corner Circuit Short to Battery

B0961:02 Parking Assist Rear Sensor Right Corner Circuit Short to Ground

B0961:04 Parking Assist Rear Sensor Right Corner Circuit Open

B0961:06 Parking Assist Rear Sensor Right Corner Circuit Low Voltage/Open

B0961:08 Parking Assist Rear Sensor Right Corner Circuit Performance - Signal Invalid

B0961:18 Parking Assist Rear Sensor Right Corner Circuit Low Signal Amplitude

B0961:21 Parking Assist Rear Sensor Right Corner Circuit Incorrect Period

B0961:22 Parking Assist Rear Sensor Right Corner Circuit Too Short Low-Time

B0961:3A Parking Assist Rear Sensor Right Corner Circuit Incorrect Component Installed

B0961:3B Parking Assist Rear Sensor Right Corner Circuit Self-Test Malfunction

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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.

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