AutoCodes – Cadillac – B0959 Cadillac

B0959 Cadillac Code - Parking Assist Rear Sensor Left Middle Circuit

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 Left Middle, Parking Assist Rear Sensor Left Middle harness is open or shorted, Parking Assist Rear Sensor Left Middle 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: B0959 Cadillac indicates Parking Assist Rear Sensor Left Middle Circuit.
Common causes: Common causes include Faulty Parking Assist Rear Sensor Left Middle, Parking Assist Rear Sensor Left Middle harness is open or shorted, Parking Assist Rear Sensor Left Middle 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 2,483

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 02, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0959 Cadillac 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 is out of specification.

OBDII Code B0959 Cadillac - Parking Assist Rear Sensor Left Middle Circuit - AutoCodes.com — B0959 Cadillac Code - Parking Assist Rear Sensor Left Middle Circuit

What does this mean?

What are the Possible Causes of the DTC B0959 Cadillac?

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

How to Fix the DTC B0959 Cadillac?

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

B0959:01 Parking Assist Rear Sensor Left Middle Circuit Short to Battery
B0959:02 Parking Assist Rear Sensor Left Middle Circuit Short to Ground
B0959:04 Parking Assist Rear Sensor Left Middle Circuit Open
B0959:06 Parking Assist Rear Sensor Left Middle Circuit Low Voltage/Open
B0959:08 Parking Assist Rear Sensor Left Middle Circuit Performance - Signal Invalid
B0959:18 Parking Assist Rear Sensor Left Middle Circuit Low Signal Amplitude
B0959:21 Parking Assist Rear Sensor Left Middle Circuit Incorrect Period
B0959:22 Parking Assist Rear Sensor Left Middle Circuit Too Short Low-Time
B0959:3A Parking Assist Rear Sensor Left Middle Circuit Incorrect Component Installed
B0959:3B Parking Assist Rear Sensor Left Middle Circuit Self-Test Malfunction

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0959 Cadillac 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.

Frequently Asked Questions about B0959 Cadillac Code

1. What are the common symptoms of OBDII code B0959 in a Cadillac related to the Parking Assist Rear Sensor Left Middle Circuit?

The common symptoms include a malfunctioning or disabled parking assist system, warning lights on the dashboard, and audible alerts signaling issues with the rear sensor.

2. What can cause the OBDII code B0959 to be triggered in a Cadillac?

The code B0959 is typically triggered by a faulty rear sensor located in the left middle position of the parking assist system. This can be due to sensor damage, wiring issues, or corrosion.

3. How can I diagnose the Parking Assist Rear Sensor Left Middle Circuit issue in my Cadillac?

Diagnosing the issue involves using an OBDII scanner to retrieve the specific code, visually inspecting the rear sensor for any damage, checking the wiring for loose connections or corrosion, and testing the sensor's functionality.

4. What are some repair tips for resolving the OBDII code B0959 in a Cadillac?

Repair tips include replacing the faulty rear sensor, repairing or replacing damaged wiring, ensuring all connections are secure, and clearing the error code with an OBDII scanner after the repairs are completed.

5. Can I drive my Cadillac safely with the OBDII code B0959 related to the Parking Assist Rear Sensor Left Middle Circuit?

While it is generally safe to drive the vehicle with this code, it is important to address the underlying issue promptly to restore the proper functioning of the parking assist system for enhanced safety and convenience.

6. Are there any DIY fixes for the OBDII code B0959 in a Cadillac?

DIY fixes may include checking and cleaning the sensor connections, inspecting the wiring for visible damage, and replacing the rear sensor if needed. However, complex repairs may require professional assistance.

7. How much does it cost to repair the Parking Assist Rear Sensor Left Middle Circuit issue in a Cadillac?

The cost of repair can vary depending on the extent of the damage, the need for replacement parts, and whether you opt for DIY repairs or professional assistance. It is advisable to obtain quotes from reputable mechanics or dealerships.

8. Can extreme weather conditions affect the functionality of the parking assist system and trigger the OBDII code B0959 in a Cadillac?

Yes, extreme weather conditions such as heavy rain, snow, or extreme temperatures can potentially impact the performance of the parking assist sensors and lead to the triggering of the B0959 fault code.

9. How long does it typically take to repair the OBDII code B0959 related to the Parking Assist Rear Sensor Left Middle Circuit in a Cadillac?

The repair time can vary depending on the complexity of the issue, availability of replacement parts, and the expertise of the person performing the repairs. In general, it may take a few hours to a day to complete the repairs.

10. Can I prevent the recurrence of the OBDII code B0959 in my Cadillac after repairs?

To prevent the code from recurring, it is essential to ensure proper maintenance of the parking assist system, regular inspection of the sensors and wiring, and addressing any issues promptly to avoid further damage or malfunctions.