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Engine-Codes – Generic – B0957:18

B0957:18 Code - Parking Assist Front Sensor Right Corner Circuit Low Signal Amplitude

Quick Answer

The diagnostic trouble code (DTC) B0957:18 indicates a low signal amplitude from the right corner parking assist sensor located at the front of the vehicle. Common causes include Physical damage to the right corner parking assist sensor due to impacts or debris, Corrosion or damage to the wiring harness connected to the sensor, Malfunctioning or failed parking assist sensor. 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
B0957:18 indicates Parking Assist Front Sensor Right Corner Circuit Low Signal Amplitude.
Common causes
Common causes include Physical damage to the right corner parking assist sensor due to impacts or debris, Corrosion or damage to the wiring harness connected to the sensor, Malfunctioning or failed parking assist sensor.
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 Oct 21, 2024
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Code B0957:18 Description

The diagnostic trouble code (DTC) B0957:18 indicates a low signal amplitude from the right corner parking assist sensor located at the front of the vehicle. Parking assist systems utilize ultrasonic sensors to detect obstacles while parking, providing audio and visual alerts to the driver. When the signal amplitude is low, it suggests that the sensor is not functioning correctly, which can lead to impaired parking assistance capabilities.

OBDII Code B0957:18 - Parking Assist Front Sensor Right Corner Circuit Low Signal Amplitude
B0957:18 Code - Parking Assist Front Sensor Right Corner Circuit Low Signal Amplitude

Common Causes of B0957:18

  1. Physical damage to the right corner parking assist sensor due to impacts or debris.
  2. Corrosion or damage to the wiring harness connected to the sensor.
  3. Malfunctioning or failed parking assist sensor.
  4. Software issues or faults in the vehicle's electronic control unit (ECU).
  5. Environmental factors such as dirt, ice, or snow obstructing the sensor's ability to detect objects.

Symptoms of B0957:18

  1. Inaccurate or no alerts when approaching obstacles while parking.
  2. Warning lights illuminated on the dashboard related to parking assist.
  3. Intermittent failure of the parking assist system to activate.
  4. Unusual sounds or beeping from the parking assist system when no obstacles are present.
  5. Reduced effectiveness of the parking assist feature, leading to driver reliance on manual observation.

How to Fix B0957:18

  1. Visual Inspection: Start with a thorough visual inspection of the right corner parking assist sensor and its wiring harness for any visible damage, corrosion, or obstructions.
  2. Sensor Testing: Use a multimeter or diagnostic scan tool to test the sensor's output signal. Compare the readings with manufacturer specifications to determine if the sensor is functioning correctly.
  3. Wiring Check: Inspect the wiring harness for continuity and any signs of wear or damage. Repair or replace any faulty wiring as necessary.
  4. Sensor Replacement: If the sensor is determined to be faulty, replace it with a new unit. Ensure that the replacement sensor is compatible with the vehicle's make and model.
  5. Recalibration: After repairs, recalibrate the parking assist system using a diagnostic tool to ensure proper functionality and accurate detection of obstacles.

Cost to Fix B0957:18

Repair costs for addressing the B0957:18 code can vary widely based on several factors, including the specific vehicle make and model, the extent of the damage, and local labor rates. On average, the cost for parts and labor can range from $150 to $600. This estimate includes the cost of a new parking assist sensor (typically between $100 and $300) and labor charges, which can vary from $80 to $150 per hour.

What does this mean?

Tech Notes for B0957:18

B0957:01 Parking Assist Front Sensor Right Corner Circuit Short to Battery

B0957:02 Parking Assist Front Sensor Right Corner Circuit Short to Ground

B0957:04 Parking Assist Front Sensor Right Corner Circuit Open

B0957:06 Parking Assist Front Sensor Right Corner Circuit Low Voltage/Open

B0957:08 Parking Assist Front Sensor Right Corner Circuit Performance - Signal Invalid

B0957:18 Parking Assist Front Sensor Right Corner Circuit Low Signal Amplitude

B0957:21 Parking Assist Front Sensor Right Corner Circuit Incorrect Period

B0957:22 Parking Assist Front Sensor Right Corner Circuit Too Short Low-Time

B0957:3A Parking Assist Front Sensor Right Corner Circuit Incorrect Component Installed

B0957:3B Parking Assist Front 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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