AutoCodes – Generic – B0961:21

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

Quick Answer

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. Common causes include Faulty Parking Assist Rear Sensor Right Corner, Parking Assist Rear Sensor Right Corner harness is open or shorted, Parking Assist Rear Sensor Right Corner circuit poor electrical connection. 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 Faulty Parking Assist Rear Sensor Right Corner, Parking Assist Rear Sensor Right Corner harness is open or shorted, Parking Assist Rear Sensor Right Corner circuit poor electrical connection.
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.

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Code Popularity 147

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 03, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code B0961:21 Description

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. The Parking Assist Control Module supplies 12 V to the parking assist sensors via the 12 V reference circuit and provides ground via the low reference circuit. The Parking Assist Control Module triggers the sensors in a sequential loop. After each sensor transmits, the Parking Assist Control Module uses the sensor echo received through the signal circuit to calculate the distance and position of an object. The Diagnostic Trouble Code (DTC) will be set when the Parking Aid Rear Sensor signal to the Parking Assist Control Module determines an incorrect change in the position of an object while the vehicle is in motion.

OBDII Code B0961:21 - Parking Assist Rear Sensor Right Corner Circuit Incorrect Period - AutoCodes.com — B0961:21 Code - Parking Assist Rear Sensor Right Corner Circuit Incorrect Period

What does this mean?

What are the Possible Causes of the DTC B0961:21?

Faulty Parking Assist Rear Sensor Right Corner
Parking Assist Rear Sensor Right Corner harness is open or shorted
Parking Assist Rear Sensor Right Corner circuit poor electrical connection
Faulty Parking Assist Control Module

How to Fix the DTC B0961:21?

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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0961:21 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.

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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.