AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Generic - P150C

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

- Code Popularity: 13,612 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC P150C?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P150C?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P150C Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P150C code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P150C Description

To improve vehicle shift, and feel, the Transmission Control Module (TCM) is constantly sending the Engine Control Module (ECM) serial data messages with information regarding its request for modifying engine speed or torque. The ECM sets this code when it detects a discrepancy in the structure of this message causing its integrity to be questioned. An intermittent fault in the Controller Area Network (CAN) circuits will cause Diagnostic Trouble Code (DTC) P150C to set.

OBDII Code P150C - Transmission Control Module Engine Speed Request Signal Message Counter Incorrect - AutoCodes.com
P150C Code - Transmission Control Module Engine Speed Request Signal Message Counter Incorrect

Need More Information on the Code?

Need more information on how to fix the P150C code? Get Access to Factory Service Manuals

Information for Specific Makes

  • P150C Buick Transmission Control Module Engine Speed Request Signal Message Counter Incorrect  📷
  • P150C Cadillac Transmission Control Module Engine Speed Request Signal Message Counter Incorrect  📷
  • P150C Chevrolet Transmission Control Module Engine Speed Request Signal Message Counter Incorrect  📷
  • P150C GMC Transmission Control Module Engine Speed Request Signal Message Counter Incorrect  📷

Need Help with the Code?

Get the P150C code diagnosed by a professional: Find a repair shop in your area

Code P150C comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P150C code? Have you replaced any parts?
Any information is appreciated. Thanks