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P150C 2017 Chevrolet Silverado Code - Transmission Control Module Engine Speed Request Signal Message Counter Incorrect

Quick Answer

The P150C diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates that the Transmission Control Module (TCM) has detected an incorrect message counter for the engine speed request signal. Common causes include Faulty wiring or connectors related to the engine speed sensor, Malfunctioning engine speed sensor, Issues with the Transmission Control Module (TCM). 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
P150C 2017 Chevrolet Silverado indicates Transmission Control Module Engine Speed Request Signal Message Counter Incorrect.
Common causes
Common causes include Faulty wiring or connectors related to the engine speed sensor, Malfunctioning engine speed sensor, Issues with the Transmission Control Module (TCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P150C 2017 Chevrolet Silverado Description

The P150C diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates that the Transmission Control Module (TCM) has detected an incorrect message counter for the engine speed request signal. In simpler terms, this means that the TCM is not receiving the expected number of signals related to the engine speed from the engine control module (ECM). This miscommunication can lead to various issues with the vehicle's transmission control system.

OBDII Code P150C 2017 Chevrolet Silverado - Transmission Control Module Engine Speed Request Signal Message Counter Incorrect
P150C 2017 Chevrolet Silverado Code - Transmission Control Module Engine Speed Request Signal Message Counter Incorrect

Common Causes of P150C 2017 Chevrolet Silverado

  1. Faulty wiring or connectors related to the engine speed sensor
  2. Malfunctioning engine speed sensor
  3. Issues with the Transmission Control Module (TCM)
  4. Problems with the Engine Control Module (ECM)
  5. Communication errors between modules

Symptoms of P150C 2017 Chevrolet Silverado

  1. Erratic shifting behavior
  2. Harsh gear changes
  3. Delayed engagement when shifting
  4. Transmission slipping
  5. Reduced fuel efficiency

How to Fix P150C 2017 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the wiring and connectors related to the engine speed sensor. Repair or replace any damaged components.
  2. Test the engine speed sensor to ensure it is functioning correctly. Replace the sensor if necessary.
  3. Check the Transmission Control Module (TCM) for any signs of malfunction. If needed, reprogram or replace the TCM.
  4. Inspect the Engine Control Module (ECM) for any faults or communication errors. Address any issues found.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P150C 2017 Chevrolet Silverado

The typical repair costs for addressing a P150C code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, parts and labor for this type of repair could range from $200 to $500. However, it is essential to note that diagnosis time and labor rates at auto repair shops can vary significantly. Rates may range from $80 to $150 per hour, with higher rates in metropolitan areas or at dealerships and lower rates at independent shops. For a more precise estimate, it is advisable to check with local auto repair shops.

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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 P150C 2017 Chevrolet Silverado Code

1. What does the OBDII code P150C mean on a 2017 Chevrolet Silverado?

P150C indicates that the Transmission Control Module (TCM) has detected an issue with the engine speed request signal message counter, which may suggest a communication problem between the TCM and Engine Control Module (ECM).

2. What are the common symptoms of code P150C on a 2017 Silverado?

Symptoms may include harsh shifting, delayed gear engagement, reduced engine performance, or the Check Engine Light being illuminated.

3. What causes the P150C code on a 2017 Chevrolet Silverado?

Common causes include a faulty TCM, ECM software issues, damaged wiring or connectors in the communication circuit, or a poor electrical ground.

4. Can I drive my 2017 Chevrolet Silverado with a P150C code?

While the vehicle may still be drivable, operating it with this code can lead to poor performance, potential transmission damage, or unsafe driving conditions. It’s best to address the issue promptly.

5. How can I diagnose the P150C code on my Silverado?

Start by scanning for additional codes, inspecting the wiring and connectors between the TCM and ECM, and checking for software updates for the control modules. A professional diagnostic scan tool may be required.

6. What repairs can fix the P150C code on a 2017 Chevrolet Silverado?

Repairs might include reprogramming the TCM or ECM, repairing or replacing damaged wiring or connectors, and, in rare cases, replacing the TCM or ECM.

7. Can a software update fix the P150C code on my Silverado?

Yes, a software update for the TCM or ECM can sometimes resolve communication errors like the P150C code. Check with a dealership or qualified technician.

8. How much does it cost to fix the P150C code on a 2017 Chevrolet Silverado?

The cost varies depending on the cause. Simple repairs like fixing wiring may cost $100-$300, while replacing a TCM or ECM can range from $500 to $1,500.

9. Does the P150C code mean my transmission is failing?

Not necessarily. The code points to a communication issue between the TCM and ECM rather than a direct transmission failure. However, ignoring it may cause transmission problems over time.

10. Can a weak battery cause the P150C code on a 2017 Silverado?

Yes, a weak or failing battery can sometimes cause communication errors between control modules, including the P150C code. Ensure the battery and charging system are in good condition.

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