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P117A 2016 Chevrolet Silverado Code - Engine Block Coolant Valve Signal Message Counter Incorrect

Quick Answer

The P117A code indicates a malfunction related to the Engine Block Coolant Valve (EBCV) signal message counter in a 2016 Chevrolet Silverado. Common causes include Faulty Engine Block Coolant Valve (EBCV) that fails to regulate coolant flow properly, Damaged or corroded wiring or connectors associated with the EBCV, Malfunctioning Engine Control Module (ECM) that misinterprets the EBCV signal. 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 2016 Chevrolet Silverado indicates Engine Block Coolant Valve Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Engine Block Coolant Valve (EBCV) that fails to regulate coolant flow properly, Damaged or corroded wiring or connectors associated with the EBCV, Malfunctioning Engine Control Module (ECM) that misinterprets the EBCV signal.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 02, 2024
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Code P117A 2016 Chevrolet Silverado Description

The P117A code indicates a malfunction related to the Engine Block Coolant Valve (EBCV) signal message counter in a 2016 Chevrolet Silverado. The EBCV is a critical component in the vehicle's cooling system, responsible for regulating the flow of coolant to maintain optimal engine temperature. When the Engine Control Module (ECM) detects an inconsistency in the signal message counter from the EBCV, it triggers this diagnostic trouble code (DTC).

OBDII Code P117A 2016 Chevrolet Silverado - Engine Block Coolant Valve Signal Message Counter Incorrect
P117A 2016 Chevrolet Silverado Code - Engine Block Coolant Valve Signal Message Counter Incorrect

Common Causes of P117A 2016 Chevrolet Silverado

  1. Faulty Engine Block Coolant Valve (EBCV) that fails to regulate coolant flow properly.
  2. Damaged or corroded wiring or connectors associated with the EBCV.
  3. Malfunctioning Engine Control Module (ECM) that misinterprets the EBCV signal.
  4. Software issues or glitches within the ECM that affect signal processing.
  5. Blockages or restrictions in the cooling system that impact coolant flow.

Symptoms of P117A 2016 Chevrolet Silverado

  1. Engine overheating or fluctuating temperature gauge readings.
  2. Poor fuel economy due to inefficient engine operation.
  3. Check Engine Light illuminated on the dashboard.
  4. Unusual engine noises, such as knocking or pinging, indicating abnormal combustion.
  5. Reduced engine performance, including sluggish acceleration or stalling.

How to Fix P117A 2016 Chevrolet Silverado

  1. Diagnostic Assessment: Begin by using an OBD-II scanner to confirm the P117A code and check for any additional codes that may provide further insight into the issue.
  2. Visual Inspection: Conduct a thorough visual inspection of the EBCV, wiring, and connectors for signs of damage, corrosion, or loose connections.
  3. EBCV Testing: Test the EBCV for proper operation using a multimeter to measure resistance and ensure it responds correctly to commands from the ECM.
  4. Wiring Repair/Replacement: If damaged wiring or connectors are found, repair or replace them to ensure a proper signal is transmitted to the ECM.
  5. ECM Reprogramming or Replacement: If the EBCV and wiring are functioning correctly, consider reprogramming or replacing the ECM if it is determined to be the source of the issue.

Cost to Fix P117A 2016 Chevrolet Silverado

The typical repair costs for addressing the P117A code can vary significantly based on the specific diagnosis and repairs required. On average, you might expect to pay between $200 and $800 for parts and labor. This estimate includes the cost of a new EBCV (if needed), wiring repairs, and labor for diagnostics and installation.

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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 P117A 2016 Chevrolet Silverado Code

1. What does the OBDII code P117A mean on a 2016 Chevrolet Silverado?

P117A indicates that the Engine Control Module (ECM) has detected an issue with the signal or message counter for the engine block coolant valve, which controls coolant flow.

2. What are the common symptoms of code P117A in a Chevrolet Silverado?

Symptoms may include an illuminated check engine light, poor engine warm-up, fluctuating engine temperature, or reduced heater performance.

3. What causes the P117A code to appear in the 2016 Silverado?

The code can be caused by a malfunctioning engine block coolant valve, wiring issues, a failed ECM, or a software-related communication error.

4. Can I continue driving with a P117A code on my Silverado?

While the vehicle may still be drivable, ignoring the issue can lead to engine temperature regulation problems and potential long-term damage.

5. How do I diagnose the P117A code on a 2016 Chevrolet Silverado?

Start by scanning for additional codes, inspecting the coolant valve and its wiring for damage, and checking for proper signal communication using a diagnostic tool.

6. What are common fixes for the P117A code?

Common fixes include replacing the engine block coolant valve, repairing or replacing damaged wiring, or updating the ECM software if needed.

7. How much does it cost to repair a P117A code on a Chevrolet Silverado?

Repair costs can vary, but replacing a coolant valve typically ranges from $200 to $400, including parts and labor.

8. Can a faulty thermostat cause the P117A code?

No, the P117A code specifically relates to the engine block coolant valve signal, not the thermostat.

9. Does the P117A code require reprogramming the ECM?

In some cases, the ECM may need a software update to resolve communication errors, but this depends on the diagnosis.

10. Is the engine block coolant valve part of regular maintenance?

No, the engine block coolant valve is not a regular maintenance item and is typically replaced only when it fails.

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