P117A 2015 Chevrolet Silverado Code - Engine Block Coolant Valve Signal Message Counter Incorrect
Quick Answer
The P117A code for a 2015 Chevrolet Silverado indicates that there is an issue with the Engine Block Coolant Valve Signal Message Counter being incorrect. Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Malfunctioning Engine Coolant Temperature (ECT) switch, Wiring issues or electrical connection problems. 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
- P117A 2015 Chevrolet Silverado indicates Engine Block Coolant Valve Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Malfunctioning Engine Coolant Temperature (ECT) switch, Wiring issues or electrical connection problems.
- 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 P117A 2015 Chevrolet Silverado Description
The P117A code for a 2015 Chevrolet Silverado indicates that there is an issue with the Engine Block Coolant Valve Signal Message Counter being incorrect. This valve is responsible for regulating the flow of coolant through the engine block to help maintain proper operating temperature. When this signal message counter is incorrect, it can lead to issues with the engine's cooling system, potentially causing overheating or inefficient cooling performance.
Common Causes of P117A 2015 Chevrolet Silverado
- Faulty Engine Coolant Temperature (ECT) sensor
- Malfunctioning Engine Coolant Temperature (ECT) switch
- Wiring issues or electrical connection problems
- ECM failure or software glitch
- Coolant leakage or low coolant level
Symptoms of P117A 2015 Chevrolet Silverado
- Engine overheating
- Decreased fuel efficiency
- Engine running rough or misfiring
- Check Engine Light illuminated
- Loss of heater function in the cabin
How to Fix P117A 2015 Chevrolet Silverado
- Begin by diagnosing the issue using a scan tool to read the fault codes and check the coolant valve signal message counter.
- Inspect the ECT sensor and switch to determine if they are functioning correctly.
- Check the wiring and connections for any signs of damage or corrosion and repair or replace as needed.
- Test the ECM to ensure it is operating properly and reprogram if necessary.
- Refill and bleed the cooling system, ensuring proper coolant levels and system functionality.
Cost to Fix P117A 2015 Chevrolet Silverado
The typical repair costs for addressing a P117A code on a 2015 Chevrolet Silverado can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates can vary, so it is advisable to consult with local auto repair shops for a more accurate estimate. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops may offer more competitive pricing.
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Frequently Asked Questions about P117A 2015 Chevrolet Silverado Code
1. What does the OBDII code P117A mean on a 2015 Chevrolet Silverado?
P117A indicates that the Engine Block Coolant Valve Signal Message Counter is incorrect, meaning there’s an issue with the communication or function of the coolant control valve.
2. What are the common symptoms of code P117A on a 2015 Silverado?
Symptoms may include the Check Engine Light turning on, irregular engine temperature regulation, or poor cabin heating performance.
3. What causes the P117A code to appear on a 2015 Chevy Silverado?
Common causes include a faulty coolant control valve, wiring or connection issues, or a software/communication error between the valve and the engine control module (ECM).
4. Can I continue driving my 2015 Chevrolet Silverado with the P117A code?
While it may be possible to drive, ignoring this code could lead to engine overheating or other temperature-related issues over time.
5. How do I diagnose the P117A code on my 2015 Silverado?
Diagnosis typically involves checking the coolant valve for proper operation, inspecting wiring and connectors, and using a scan tool to verify communication between the valve and ECM.
6. How do I fix the P117A code on a 2015 Chevy Silverado?
Repairs may involve replacing the coolant control valve, repairing damaged wiring, or updating the ECM software if a communication issue is detected.
7. Is the P117A code related to low coolant levels?
Not directly, but low coolant levels can cause overheating, which might trigger related codes or exacerbate the issue.
8. How much does it cost to fix the P117A code on a 2015 Chevrolet Silverado?
Repair costs vary depending on the issue, but replacing the coolant control valve typically costs $150–$300, including parts and labor.
9. Can a faulty thermostat cause the P117A code on a 2015 Silverado?
No, the P117A code is specific to the coolant control valve and its communication, though a faulty thermostat could cause other temperature-related issues.
10. Do I need to reprogram the ECM after fixing the P117A code?
Reprogramming the ECM is not always necessary but may be required if a software update is needed to resolve communication issues.
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