AutoCodes – RAM – B128F RAM

B128F RAM Code - Park Assist Sensor 2

Quick Answer

The Park Assist Sensors (PTS) are ultrasonic transceivers that are completely controlled by the Park Assist Module. Common causes include Faulty Park Assist Sensor 2, Park Assist Sensor 2 harness is open or shorted, Park Assist Sensor 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
B128F RAM indicates Park Assist Sensor 2.
Common causes
Common causes include Faulty Park Assist Sensor 2, Park Assist Sensor 2 harness is open or shorted, Park Assist Sensor 2 circuit poor electrical connection.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code Popularity 3,124
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 29, 2024
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Code B128F RAM Description

The Park Assist Sensors (PTS) are ultrasonic transceivers that are completely controlled by the Park Assist Module. The sensors transmit and receive ultrasonic signals. Each sensor has a voltage, signal, and return the circuit to the module. The sensors communicate with the Park Assist Module using a dedicated serial bus communication circuit. The Park Assist Module monitors the PTS Sensor when the vehicle in reverse and during the self-test while the vehicle is in drive between 18 km/h (11 mph) and 40 km/h (25 mph). The Park Assist Module sets the OBDII code when the Park Assist Sensor Signal circuit is not to factory specifications.
OBDII Code B128F RAM - Park Assist Sensor 2 - AutoCodes.com
B128F RAM Code - Park Assist Sensor 2

What are the Possible Causes of the DTC B128F RAM?

  • Faulty Park Assist Sensor 2
  • Park Assist Sensor 2 harness is open or shorted
  • Park Assist Sensor 2 circuit poor electrical connection
  • Faulty Park Assist Module

How to Fix the DTC B128F RAM?

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 B128F RAM 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.

Need more information about the B128F RAM code?

Need more information on how to fix the B128F RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B128F RAM code diagnosed by a professional: Find a repair shop in your area

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 B128F RAM Code

1. What are common symptoms of OBDII code B128F related to Park Assist Sensor 2?

The common symptoms include malfunctioning of the park assist system, inaccurate distance readings, and intermittent beeping or warning alerts.

2. What are the possible causes of OBDII code B128F RAM related to Park Assist Sensor 2?

The code can be triggered by issues such as a faulty Park Assist Sensor 2, damaged wiring or connections, or a problem with the control module.

3. How can I diagnose the OBDII code B128F RAM for Park Assist Sensor 2?

Diagnosis involves using an OBDII scanner to retrieve the specific code, conducting a visual inspection of the sensor and its connections, and performing tests to identify the root cause.

4. What is the recommended repair for OBDII code B128F RAM Park Assist Sensor 2?

The repair may involve replacing the malfunctioning Park Assist Sensor 2, repairing any damaged wiring or connections, or reprogramming the control module as needed.

5. Can OBDII code B128F RAM related to Park Assist Sensor 2 be reset without repairing the issue?

Resetting the code without addressing the underlying problem may temporarily clear the error code, but the issue will likely reoccur until the root cause is fixed.

6. Are there any DIY tips for troubleshooting OBDII code B128F RAM for Park Assist Sensor 2?

You can start by checking the sensor for any physical damage, ensuring the connections are secure, and cleaning the sensor to see if it resolves the issue before seeking professional help.

7. What impact does OBDII code B128F RAM for Park Assist Sensor 2 have on vehicle safety?

This code may affect the accuracy of the park assist system, potentially leading to difficulties in parking or increased risk of collisions, emphasizing the importance of timely diagnosis and repair.

8. How long does it typically take to repair OBDII code B128F RAM related to Park Assist Sensor 2?

The repair time can vary based on the exact cause of the issue, but a qualified technician can usually diagnose and fix the problem within a few hours to a day, depending on parts availability.

9. Can OBDII code B128F RAM for Park Assist Sensor 2 cause other electrical issues in the vehicle?

While the code primarily pertains to the park assist system, unresolved issues with the sensor or control module may impact other electrical systems, highlighting the need for prompt attention.

10. Is it safe to continue driving with OBDII code B128F RAM triggered by Park Assist Sensor 2?

It is generally not recommended to drive with unresolved OBDII codes, as they indicate potential issues that could compromise the vehicle's safety and performance, prompting timely inspection and repair.

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