AutoCodes – Generic – P2158

P2158 Code - Vehicle Speed Sensor 2

Quick Answer

The Vehicle Speed Sensor (VSS) provides vehicle speed information to the Engine Control Module (ECM). Common causes include Faulty Vehicle Speed Sensor (VSS), Vehicle Speed Sensor (VSS) harness is open or shorted, Vehicle Speed Sensor (VSS) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2158 indicates Vehicle Speed Sensor 2.
Common causes: Common causes include Faulty Vehicle Speed Sensor (VSS), Vehicle Speed Sensor (VSS) harness is open or shorted, Vehicle Speed Sensor (VSS) circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 16,582

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2158 Description

The Vehicle Speed Sensor (VSS) provides vehicle speed information to the Engine Control Module (ECM). The VSS is a permanent magnet generator. The sensor is mounted in the transfer case facing the rear internal gear which is splined to the output shaft assembly. As the output shaft and internal gear rotate, the toothed rotor of the internal gear produces AC voltage as the rotor teeth pass through the magnetic field of the sensor. The AC voltage level and the number of pulses increase as the speed of the vehicle increases. The ECM converts the voltage to vehicle speed. The ECM uses the output shaft speed signal to determine shift timing, as well as transfer case range.

OBDII Code P2158 - Vehicle Speed Sensor 2 - AutoCodes.com — P2158 Code - Vehicle Speed Sensor 2

What does this mean?

What are the Possible Causes of the DTC P2158?

Faulty Vehicle Speed Sensor (VSS)
Vehicle Speed Sensor (VSS) harness is open or shorted
Vehicle Speed Sensor (VSS) circuit poor electrical connection

How to Fix the DTC P2158?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2158 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 P2158 code?

Need more information on how to fix the P2158 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2158 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2158 Buick — Vehicle Speed Sensor 2
P2158 Cadillac — Vehicle Speed Sensor 2
P2158 Chevrolet — Vehicle Speed Sensor 2
P2158 Dodge — Vehicle Speed Sensor 2
P2158 GMC — Vehicle Speed Sensor 2

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 P2158 Code

1. What are the common symptoms of OBDII code P2158 (Vehicle Speed Sensor 2)?

When this code is triggered, you may experience issues like erratic speedometer readings, problems with the cruise control system, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P2158?

Some common causes of this code include a faulty vehicle speed sensor, damaged wiring or connectors related to the sensor, or issues with the vehicle's transmission.

3. How can I diagnose the cause of OBDII code P2158?

Diagnosing this code typically involves using a code reader or scan tool to retrieve the specific fault code, checking the vehicle speed sensor and related wiring for any visible damage, and conducting a thorough inspection of the transmission components.

4. Can I drive my vehicle with OBDII code P2158?

It is not recommended to drive your vehicle with this code present, as it can lead to inaccurate speed readings and potential issues with other vehicle systems that rely on speed sensor data.

5. How can I repair OBDII code P2158?

Repairing this code often involves replacing the faulty vehicle speed sensor, repairing any damaged wiring or connectors, and clearing the code from the vehicle's computer using a scan tool.

6. Are there any DIY tips for fixing OBDII code P2158?

If you have some experience working on vehicles, you may attempt to replace the vehicle speed sensor yourself following manufacturer instructions or online guides. However, if you're unsure, it's best to seek professional help.

7. Can a vehicle speed sensor malfunction cause other problems besides triggering OBDII code P2158?

Yes, a malfunctioning vehicle speed sensor can also lead to issues like harsh shifting, poor fuel economy, and problems with the vehicle's ABS system.

8. How long does it typically take to repair OBDII code P2158?

The repair time for this code can vary depending on the exact cause of the issue, but in most cases, it can be resolved within a few hours at a repair shop.

9. Is it necessary to reset the Check Engine Light after fixing OBDII code P2158?

Yes, it is important to clear the code and reset the Check Engine Light after repairing OBDII code P2158 to ensure that the issue has been successfully resolved and to monitor for any recurring problems.

10. Can a vehicle speed sensor problem be prevented?

While some vehicle speed sensor issues can occur due to normal wear and tear, regular vehicle maintenance and inspections can help identify potential problems early on and prevent more severe issues related to the vehicle speed sensor.