P103E 2018 Chevrolet Silverado Code - Auxiliary Coolant Pump Control Signal Message Counter Incorrect
Quick Answer
The P103E diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that there is an issue with the Auxiliary Coolant Pump Control Signal Message Counter being incorrect. Common causes include Faulty auxiliary coolant pump, Wiring harness issues, Corroded or loose electrical connections. 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
- P103E 2018 Chevrolet Silverado indicates Auxiliary Coolant Pump Control Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty auxiliary coolant pump, Wiring harness issues, Corroded or loose electrical connections.
- 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 P103E 2018 Chevrolet Silverado Description
The P103E diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that there is an issue with the Auxiliary Coolant Pump Control Signal Message Counter being incorrect. The auxiliary coolant pump is responsible for circulating coolant through the engine and maintaining proper operating temperatures. When the control signal message counter is incorrect, it means that the communication between the coolant pump and the vehicle's control module is not functioning as it should.
Common Causes of P103E 2018 Chevrolet Silverado
- Faulty auxiliary coolant pump
- Wiring harness issues
- Corroded or loose electrical connections
- Faulty coolant temperature sensor
- Malfunctioning control module
Symptoms of P103E 2018 Chevrolet Silverado
- Engine overheating
- Decreased fuel efficiency
- Check Engine light illuminated
- Fluctuating coolant temperature gauge
- Reduced heater performance
How to Fix P103E 2018 Chevrolet Silverado
- Begin by conducting a thorough diagnostic scan to confirm the P103E code and identify any other related issues.
- Inspect the auxiliary coolant pump, wiring harness, electrical connections, and coolant temperature sensor for any signs of damage or malfunction.
- Test the coolant pump and related components to ensure they are functioning correctly.
- Replace any faulty components, such as the coolant pump, wiring harness, electrical connections, or coolant temperature sensor.
- Clear the DTC and perform a test drive to verify that the issue has been resolved.
Cost to Fix P103E 2018 Chevrolet Silverado
The typical repair costs for addressing the P103E code on a 2018 Chevrolet Silverado can range from $200 to $600, depending on the extent of the damage and the specific components that need to be replaced. This estimate includes parts and labor. It's important to note that diagnosis time and labor rates can vary, so it's advisable to check with local auto repair shops for a more accurate estimate.
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Frequently Asked Questions about P103E 2018 Chevrolet Silverado Code
1. What does the OBDII code P103E mean on a 2018 Chevrolet Silverado?
P103E indicates an issue with the Auxiliary Coolant Pump Control Signal Message Counter being incorrect, typically related to communication errors between the pump and the vehicle's control module.
2. What are the symptoms of code P103E in a 2018 Chevrolet Silverado?
Common symptoms include an illuminated check engine light, potential overheating in specific engine components, or reduced performance of the auxiliary cooling system.
3. What causes the P103E code to appear on a 2018 Chevrolet Silverado?
Possible causes include a faulty auxiliary coolant pump, wiring or connector issues, a malfunctioning control module, or software glitches.
4. Can I drive my 2018 Chevrolet Silverado with the P103E code?
It’s not recommended to drive for extended periods, as an impaired auxiliary coolant pump could lead to overheating or damage to engine components.
5. How do I diagnose the P103E code on my Silverado?
Start by inspecting the auxiliary coolant pump, checking for damaged wiring or loose connectors, and scanning for related codes to narrow down the issue.
6. How is the P103E code fixed on a 2018 Chevrolet Silverado?
Repairs may involve replacing the auxiliary coolant pump, repairing damaged wiring, updating the control module software, or clearing the code after resolving the issue.
7. Is the auxiliary coolant pump the same as the main coolant pump?
No, the auxiliary coolant pump is a secondary pump used to circulate coolant through specific components, typically for improved efficiency or temperature control.
8. Can a software update fix the P103E code on a 2018 Silverado?
Yes, in some cases, a software update to the vehicle’s control module can resolve communication issues causing the P103E code.
9. How much does it cost to repair the P103E code on a Chevrolet Silverado?
Repair costs can range from $200 to $600, depending on whether the issue involves the pump, wiring, or control module.
10. What tools are needed to troubleshoot the P103E code?
You’ll need an OBDII scanner to read and clear codes, a multimeter to test wiring, and possibly a service manual for detailed troubleshooting steps.
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