P103D 2016 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 2016 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.
Code P103D 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P103D 2016 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 2016 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 2016 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.
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Frequently Asked Questions about P103D 2016 Chevrolet Silverado Code
1. What does the OBDII code P103D mean on a 2016 Chevrolet Silverado?
P103D indicates an issue with the Engine Coolant Pump Control Signal Message Counter, meaning there’s a communication error between the engine control module (ECM) and the coolant pump.
2. What are the common symptoms of code P103D in a Silverado?
Symptoms may include engine overheating, illuminated check engine light, erratic cooling system performance, or reduced engine power in severe cases.
3. What causes code P103D to appear in my Silverado?
Causes can include a faulty engine coolant pump, wiring or connector issues, a software glitch in the ECM, or a communication error between the modules.
4. Can I drive my 2016 Chevrolet Silverado with a P103D code?
It’s not recommended to drive the truck for long distances with this code, as engine overheating could cause severe damage.
5. How is the P103D code diagnosed?
A technician will use a diagnostic scanner to check for stored codes, inspect the wiring and connectors for damage, and test the coolant pump’s operation and communication signals.
6. What repairs are needed to fix a P103D code?
Repairs may include replacing the engine coolant pump, repairing or replacing damaged wiring or connectors, or updating the engine control module software.
7. How much does it cost to fix a P103D code on a 2016 Silverado?
Repair costs can vary, but replacing the coolant pump may cost $400–$800, including parts and labor. Wiring repairs or software updates may cost less.
8. Can a P103D code be cleared without repairs?
Clearing the code without addressing the underlying issue will only result in it returning. Proper diagnosis and repair are necessary to resolve the problem.
9. Could a weak battery cause the P103D code on my Silverado?
Yes, a weak or failing battery can cause communication errors between modules, potentially triggering this code.
10. How can I prevent the P103D code from appearing again?
Regularly inspect the cooling system components, ensure the battery is in good condition, and keep the ECM software up to date.
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