P117A 2018 Chevrolet Silverado Code - Engine Block Coolant Valve Signal Message Counter Incorrect
Quick Answer
The P117A diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that the Engine Block Coolant Valve Signal Message Counter is incorrect. Common causes include Faulty engine block coolant valve, Wiring or connection issues between the ECM and coolant valve, ECM software malfunction. 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 2018 Chevrolet Silverado indicates Engine Block Coolant Valve Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty engine block coolant valve, Wiring or connection issues between the ECM and coolant valve, ECM software malfunction.
- 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 2018 Chevrolet Silverado Description
The P117A diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that the Engine Block Coolant Valve Signal Message Counter is incorrect. This code typically points to a problem with the communication between the engine control module (ECM) and the engine block coolant valve. The engine block coolant valve is responsible for regulating the flow of coolant to the engine block to maintain optimal operating temperatures. When the ECM detects that the signal message counter is incorrect, it means that there is a discrepancy in the data being transmitted between the two components.
Common Causes of P117A 2018 Chevrolet Silverado
- Faulty engine block coolant valve
- Wiring or connection issues between the ECM and coolant valve
- ECM software malfunction
- Low coolant levels
- Coolant system blockage or restriction
Symptoms of P117A 2018 Chevrolet Silverado
- Check engine light illuminated
- Engine overheating
- Decreased fuel efficiency
- Rough idling or stalling
- Poor engine performance
How to Fix P117A 2018 Chevrolet Silverado
- Diagnose the issue by using a scan tool to retrieve the DTC and inspecting the engine block coolant valve and related components.
- Check the wiring and connections for any damage or corrosion, repairing or replacing as needed.
- Test the engine block coolant valve for proper operation and replace if faulty.
- Perform a coolant system flush and refill to ensure proper coolant levels and flow.
- Clear the DTC and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P117A 2018 Chevrolet Silverado
The cost of repairing a P117A DTC on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts such as a new engine block coolant valve and coolant can range from $100 to $300. Labor costs at an auto repair shop typically range from $80 to $150 per hour. The total cost of the repair, including parts and labor, could range from $200 to $500. It's important to note that prices may vary based on location, vehicle make and model, and the specific repair shop. It's recommended to obtain quotes from multiple shops to ensure a competitive price.
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Frequently Asked Questions about P117A 2018 Chevrolet Silverado Code
1. What does the OBDII code P117A mean on a 2018 Chevrolet Silverado?
P117A indicates an issue with the Engine Block Coolant Valve Signal Message Counter, meaning the engine control module (ECM) is receiving incorrect or unexpected data from the coolant valve.
2. What are the symptoms of code P117A on a Chevrolet Silverado?
Common symptoms include an illuminated check engine light, potential engine overheating, poor cabin heating performance, or erratic temperature gauge readings.
3. What causes the P117A code on a 2018 Chevrolet Silverado?
The code can be caused by a malfunctioning coolant valve, wiring or connector issues, a faulty ECM, or software-related communication errors.
4. Can I drive my Silverado with the P117A code?
Driving with this code is not recommended as it may lead to engine overheating or inefficient cooling system performance, potentially causing engine damage.
5. How is the P117A code diagnosed?
A technician will inspect the wiring and connectors, test the coolant valve operation, and check for proper communication between the ECM and the valve using a diagnostic scanner.
6. How do you fix the P117A code on a Chevrolet Silverado?
Repairs may include replacing the engine block coolant valve, repairing damaged wiring or connectors, updating ECM software, or replacing the ECM if it's determined to be faulty.
7. Is the P117A code specific to the 2018 Chevrolet Silverado?
While P117A is more commonly reported in GM vehicles like the Silverado, it may appear in other vehicles with similar cooling system designs.
8. How much does it cost to repair a P117A code?
The cost can vary, but replacing the coolant valve typically ranges from $150 to $400, depending on parts and labor. Additional repairs like wiring fixes or ECM replacement may increase costs.
9. Can a dirty or clogged coolant system cause the P117A code?
While not a direct cause, debris or blockages in the cooling system can strain the coolant valve, potentially leading to related issues over time.
10. Will clearing the P117A code solve the problem?
Clearing the code without addressing the underlying issue will only temporarily hide the problem. The code is likely to return until the root cause is fixed.
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