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Engine-Codes – Mercury – P164C Mercury

P164C Mercury Code - Internal Control Module Start-Stop Performance

Quick Answer

The P164C code for Mercury vehicles indicates an issue with the Internal Control Module (ICM) Start-Stop Performance. Common causes include Faulty Internal Control Module, Wiring or connector issues, Low battery voltage. 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
P164C Mercury indicates Internal Control Module Start-Stop Performance.
Common causes
Common causes include Faulty Internal Control Module, Wiring or connector issues, Low battery voltage.
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 Aug 25, 2024
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Code P164C Mercury Description

The P164C code for Mercury vehicles indicates an issue with the Internal Control Module (ICM) Start-Stop Performance. The ICM is responsible for managing various functions within the vehicle, including the start-stop system, which automatically shuts off the engine when the vehicle comes to a stop to save fuel. When this code is triggered, it means that the ICM is not performing as expected, which can lead to issues with the start-stop system and potentially affect the overall performance of the vehicle.

OBDII Code P164C Mercury - Internal Control Module Start-Stop Performance
P164C Mercury Code - Internal Control Module Start-Stop Performance

Common Causes of P164C Mercury

  1. Faulty Internal Control Module
  2. Wiring or connector issues
  3. Low battery voltage
  4. Software glitches or malfunctions
  5. Environmental factors like extreme temperatures affecting the ICM

Symptoms of P164C Mercury

  1. Engine stalling or not starting properly
  2. Reduced fuel efficiency
  3. Check engine light illuminated on the dashboard
  4. Delayed response when accelerating
  5. Rough idling or engine vibrations

How to Fix P164C Mercury

  1. Use a diagnostic scanner to retrieve the fault codes and pinpoint the exact cause of the issue.
  2. Inspect the wiring and connectors associated with the ICM for any signs of damage or corrosion.
  3. Test the battery voltage and ensure it meets the manufacturer's specifications.
  4. Update the software of the Internal Control Module if necessary.
  5. Replace the Internal Control Module if it is determined to be faulty and causing the performance issue.

Cost to Fix P164C Mercury

The cost of repairing the Internal Control Module Start-Stop Performance issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, the repair costs for this type of issue can range from $200 to $500, including parts and labor. However, it's important to note that prices can fluctuate based on the complexity of the repair and the model of your Mercury vehicle. It's recommended to consult with a trusted mechanic or auto repair shop to get an accurate estimate for your specific situation.

What does this mean?

Tech Notes for P164C Mercury

This Diagnostic Trouble Code (DTC) may be accompanied by other DTCs. Check for other DTCs and diagnose those first. If no DTCs are present, continue to follow diagnosis for this DTC.

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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 P164C Mercury Code

1. What are the common symptoms of OBDII code P164C (Internal Control Module Start-Stop Performance) in a Mercury vehicle?

- Common symptoms include difficulty starting the engine, stalling while driving, poor performance, and the engine not turning off properly.

2. What are the possible causes of OBDII code P164C in a Mercury vehicle?

- The code P164C can be caused by issues with the start-stop system, a faulty internal control module, wiring problems, or software issues in the vehicle's computer system.

3. How can I diagnose OBDII code P164C in my Mercury vehicle?

- Diagnosing code P164C often requires a professional OBDII scanner to read the code and pinpoint the underlying issue. Checking the start-stop system components and inspecting wiring connections are common diagnostic steps.

4. Can I drive my Mercury vehicle with OBDII code P164C present?

- It is not recommended to drive the vehicle with OBDII code P164C present, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

5. How can I repair OBDII code P164C in my Mercury vehicle?

- Repairing code P164C typically involves fixing the underlying issue causing the code, which may include repairing or replacing faulty start-stop system components, addressing wiring issues, or reprogramming the internal control module.

6. Is it possible to reset OBDII code P164C in a Mercury vehicle?

- Resetting the code may temporarily clear the warning light, but it will likely reappear if the underlying issue is not addressed. It's important to diagnose and repair the root cause of the code.

7. Can a DIY enthusiast fix OBDII code P164C in a Mercury vehicle?

- While some basic troubleshooting steps can be taken by DIY enthusiasts, diagnosing and repairing code P164C often requires specialized tools and expertise. It's recommended to consult a professional mechanic for accurate diagnosis and repair.

8. How much does it typically cost to repair OBDII code P164C in a Mercury vehicle?

- The cost of repairing code P164C can vary depending on the specific issue causing the code and the labor rates in your area. It's best to obtain quotes from local mechanics or dealerships for an accurate estimate.

9. Will OBDII code P164C cause my Mercury vehicle to fail emissions testing?

- Yes, having an active OBDII fault code like P164C can cause your Mercury vehicle to fail emissions testing. It's important to address the issue and clear the code before undergoing emissions testing.

10. How long can I safely drive my Mercury vehicle with OBDII code P164C before getting it repaired?

- It's best to address OBDII code P164C promptly to prevent further damage to your Mercury vehicle. Continuing to drive with this fault code present can lead to more severe issues and potential safety concerns.

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