AutoCodesGeneric – B0958:18

B0958:18 Code - Parking Assist Rear Sensor Left Corner Circuit Low Signal Amplitude

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 Corner, Parking Assist Rear Sensor Left Corner harness is open or shorted, Parking Assist Rear Sensor Left 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
B0958:18 indicates Parking Assist Rear Sensor Left Corner Circuit Low Signal Amplitude.
Common causes
Common causes include Faulty Parking Assist Rear Sensor Left Corner, Parking Assist Rear Sensor Left Corner harness is open or shorted, Parking Assist Rear Sensor Left 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 208
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 03, 2023
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Code B0958:18 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 Assist Control Module has determined the sensor signal voltage is too low.
OBDII Code B0958:18 - Parking Assist Rear Sensor Left Corner Circuit Low Signal Amplitude - AutoCodes.com
B0958:18 Code - Parking Assist Rear Sensor Left Corner Circuit Low Signal Amplitude

What are the Possible Causes of the DTC B0958:18?

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

How to Fix the DTC B0958:18?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0958:18 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 B0958:18 Code

1. What does the OBDII code B0958:18 mean?

Code B0958:18 indicates a low signal amplitude issue in the Parking Assist Rear Sensor Left Corner Circuit, meaning the sensor isn’t receiving or transmitting the correct signal.

2. What are the common symptoms of code B0958:18?

Symptoms may include the parking assist system not functioning, audible warnings not sounding, or inaccurate distance readings from the rear-left corner sensor.

3. What causes the B0958:18 code to appear?

Common causes include a faulty rear-left corner parking sensor, damaged wiring or connectors, or corrosion affecting the sensor circuit.

4. Can I drive my car with the B0958:18 code present?

Yes, you can drive the car, but the parking assist system may not function properly, increasing the risk of collisions during parking maneuvers.

5. How do I diagnose the B0958:18 code?

Start by visually inspecting the rear-left corner sensor, its wiring, and connectors for damage or corrosion. Use a diagnostic tool to confirm the sensor’s signal and voltage levels.

6. How can I fix the B0958:18 code?

Repairs may include replacing the faulty parking sensor, repairing or replacing damaged wiring, or cleaning corroded connectors in the circuit.

7. How much does it cost to repair the B0958:18 code?

Repair costs vary depending on the issue, but replacing a parking sensor typically costs $100–$300, while wiring repairs may be less expensive.

8. Can I reset the B0958:18 code without fixing the issue?

You can clear the code with a diagnostic scanner, but it will likely return if the underlying problem isn’t resolved.

9. Can weather conditions trigger the B0958:18 code?

Yes, extreme weather conditions like heavy rain, ice, or dirt buildup can temporarily affect the sensor’s performance and trigger the code.

10. How can I prevent the B0958:18 code from recurring?

Regularly clean the parking sensors, inspect the wiring for damage, and address any corrosion or loose connections promptly to avoid recurrence.

Discuss the causes and fixes for B0958:18 OBDII Code

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