AutoCodes – Chevrolet – P103D 2015 Chevrolet Silverado

P103D 2015 Chevrolet Silverado Code - Engine Coolant Pump Control Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Engine Coolant Pump Control Module, Engine Coolant Pump Control Module harness is open or shorted, Engine Coolant Pump Control Module 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: P103D 2015 Chevrolet Silverado indicates Engine Coolant Pump Control Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Engine Coolant Pump Control Module, Engine Coolant Pump Control Module harness is open or shorted, Engine Coolant Pump Control Module 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 315

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P103D 2015 Chevrolet Silverado Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Engine Coolant Pump Control Signal Message Counter is Incorrect.

OBDII Code P103D 2015 Chevrolet Silverado - Engine Coolant Pump Control Signal Message Counter Incorrect - AutoCodes.com — P103D 2015 Chevrolet Silverado Code - Engine Coolant Pump Control Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P103D 2015 Chevrolet Silverado?

Faulty Engine Coolant Pump Control Module
Engine Coolant Pump Control Module harness is open or shorted
Engine Coolant Pump Control Module circuit poor electrical connection

How to Fix the DTC P103D 2015 Chevrolet Silverado?

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 P103D 2015 Chevrolet Silverado 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 P103D 2015 Chevrolet Silverado code?

Need more information on how to fix the P103D 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P103D 2015 Chevrolet Silverado Code

1. What does the OBDII code P103D mean on a 2015 Chevrolet Silverado?

The P103D code indicates an issue with the Engine Coolant Pump Control Signal Message Counter, meaning the signal communication between the engine control module (ECM) and the coolant pump is incorrect or inconsistent.

2. What are the common symptoms of the P103D code?

Common symptoms include engine overheating, reduced cooling system performance, an illuminated check engine light, and possible activation of limp mode.

3. What causes the P103D code to be triggered?

Causes may include a faulty coolant pump, wiring or connector issues in the pump control circuit, a malfunctioning ECM, or software-related communication errors.

4. Can I drive my 2015 Chevrolet Silverado with the P103D code?

Driving with this code is not recommended, as it can lead to engine overheating and potential damage if the coolant pump is not functioning properly.

5. How is the P103D code diagnosed?

Diagnosis typically involves using a scan tool to monitor coolant pump data, inspecting the wiring and connectors for damage, and testing the functionality of the coolant pump and ECM.

6. How can the P103D code be fixed?

Repairs may include replacing the coolant pump, repairing or replacing damaged wiring or connectors, updating the ECM software, or replacing the ECM if necessary.

7. Is the P103D code related to other cooling system issues?

Yes, it could be related to or cause other cooling system problems, such as a thermostat failure or radiator issues, if overheating occurs.

8. How much does it cost to fix the P103D code on a Silverado?

Repair costs vary but typically range from $300 to $800, depending on whether the coolant pump, wiring, or ECM needs replacement.

9. What tools are needed to diagnose and repair the P103D code?

A professional-grade OBDII scan tool, multimeter, and potentially a wiring diagram for the vehicle's cooling system are necessary for proper diagnosis and repair.

10. Can I reset the P103D code without fixing the issue?

While you can clear the code with a scan tool, the problem will likely return unless the underlying issue is resolved.