AutoCodes – Generic – P150A

P150A Code - Transmission Output Speed Signal Circuit

Quick Answer

The Vehicle Speed Sensor (VSS), also called the Output Shaft Speed Sensor (OSS) creates an AC voltage as the rotor passes through the magnetic field of the sensor. Common causes include Faulty Transmission Output Speed Sensor, Transmission Output Speed Sensor harness is open or shorted, Transmission Output Speed Sensor 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: P150A indicates Transmission Output Speed Signal Circuit.
Common causes: Common causes include Faulty Transmission Output Speed Sensor, Transmission Output Speed Sensor harness is open or shorted, Transmission Output Speed Sensor 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 4,371

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 Dec 18, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P150A Description

The Vehicle Speed Sensor (VSS), also called the Output Shaft Speed Sensor (OSS) creates an AC voltage as the rotor passes through the magnetic field of the sensor. The Transmission Control Module (TCM) converts the AC into a vehicle speed signal, which is used to determine shift timing and Torque Converter Clutch (TCC) scheduling. The TCM also provides a Replicated Transmission Output Speed Signal (RTOSS) to the Engine Control Module (ECM)

OBDII Code P150A - Transmission Output Speed Signal Circuit - AutoCodes.com — P150A Code - Transmission Output Speed Signal Circuit

What does this mean?

What are the Possible Causes of the DTC P150A?

Faulty Transmission Output Speed Sensor
Transmission Output Speed Sensor harness is open or shorted
Transmission Output Speed Sensor circuit poor electrical connection

How to Fix the DTC P150A?

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 P150A 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 P150A code?

Need more information on how to fix the P150A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P150A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P150A Audi — Engine Off Timer Performance
P150A Chevrolet — Transmission Output Speed Signal Circuit
P150A GMC — Transmission Output Speed Signal Circuit
P150A Volkswagen — Engine Off Timer Performance

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 P150A Code

1. What are the common symptoms of OBDII code P150A (Transmission Output Speed Signal Circuit)?

Possible symptoms include issues with the vehicle's transmission shifting erratically, the speedometer not working properly, and the vehicle going into limp mode.

2. What are the typical causes of OBDII code P150A?

Common causes of this code include faulty transmission speed sensors, damaged wiring or connectors in the output speed signal circuit, and issues with the transmission control module.

3. How can I diagnose OBDII code P150A?

Diagnosing this code typically involves using a scan tool to retrieve the code, checking the transmission speed sensors for proper operation, and inspecting the wiring and connectors for any damage.

4. What are the repair options for OBDII code P150A?

Repair options may include replacing the faulty transmission speed sensors, repairing or replacing damaged wiring or connectors in the circuit, and reprogramming the transmission control module if necessary.

5. Can I drive my vehicle with OBDII code P150A?

It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the transmission and other related components. It is best to address the issue promptly.

6. How serious is OBDII code P150A?

This code should be taken seriously as it can cause drivability issues and potentially lead to more severe transmission problems if left unresolved.

7. How much does it typically cost to repair OBDII code P150A?

The cost of repairing this code can vary depending on the underlying cause and the labor rates of the repair shop. It is advisable to get a diagnostic assessment to determine the exact cost.

8. Can a DIY enthusiast fix OBDII code P150A?

While some DIY enthusiasts may be able to diagnose and repair this code themselves, it is recommended to have a professional technician with experience in transmission systems address the issue to ensure proper repair.

9. Are there any preventive measures to avoid OBDII code P150A?

Regular maintenance of the transmission system, including checking for any signs of wear or damage to the speed sensors and wiring, can help prevent issues that may trigger this code.

10. How long does it take to repair OBDII code P150A?

The repair time for this code can vary depending on the specific cause of the issue and the complexity of the repair. It is best to consult with a technician for an accurate estimate of the repair time.