Engine-CodesGeneric – P164C

P164C Code - Internal Control Module Start-Stop Performance

Quick Answer

The P164C code indicates a problem with the internal control module's start-stop performance in the vehicle. Common causes include Faulty internal control module, Wiring issues, Sensor 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
P164C indicates Internal Control Module Start-Stop Performance.
Common causes
Common causes include Faulty internal control module, Wiring issues, Sensor 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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P164C Description

The P164C code indicates a problem with the internal control module's start-stop performance in the vehicle. The start-stop system is designed to automatically shut off the engine when the vehicle comes to a stop, such as at a traffic light, and restart it when the driver releases the brake. This code suggests that the control module responsible for managing this process is not functioning as intended.

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

Common Causes of P164C

  1. Faulty internal control module
  2. Wiring issues
  3. Sensor malfunction
  4. Software glitches
  5. Battery or charging system problems

Symptoms of P164C

  1. Engine not shutting off at stops
  2. Engine not restarting after coming to a stop
  3. Reduced fuel efficiency
  4. Check Engine Light illuminated
  5. Rough idling or stalling

How to Fix P164C

  1. Diagnose the root cause of the issue using a diagnostic scanner to retrieve the trouble codes.
  2. Inspect the internal control module, wiring, and sensors for any visible damage or loose connections.
  3. Test the battery and charging system to ensure they are functioning properly.
  4. Clear the trouble codes and reset the system to see if the issue resolves.
  5. If necessary, replace the faulty control module, repair any wiring issues, or recalibrate the system as needed.

Cost to Fix P164C

The cost of repairing the P164C code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing a control module can range from $200 to $500, while addressing wiring or sensor issues may cost between $100 and $300. Keep in mind that diagnostic time and labor rates can impact the overall cost, so it's advisable to consult with a mechanic for a more accurate estimate based on your vehicle's make and model.

Tech Notes for P164C

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.

Need more information about the P164C code?

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Code P164C Information for Specific Makes

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 Code

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

- The common symptoms include issues with the start-stop system not functioning properly, engine stalling or hesitation during start or stop, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P164C?

- The code P164C can be triggered by various issues such as a faulty start-stop system control module, wiring or connector problems, software glitches, or a weak car battery.

3. How is OBDII code P164C diagnosed?

- Diagnosis of code P164C typically involves using an OBDII scanner to retrieve the code, checking the freeze frame data for more information, and performing a thorough inspection of the start-stop system components.

4. Can a weak car battery cause OBDII code P164C to appear?

- Yes, a weak car battery can potentially trigger code P164C as the start-stop system heavily relies on a properly functioning battery to operate efficiently.

5. What are some repair tips for addressing OBDII code P164C?

- Repair tips may include checking and replacing the car battery if needed, inspecting the start-stop system components for any faults, ensuring all wiring and connectors are secure, and updating the control module software if applicable.

6. Is it safe to continue driving with OBDII code P164C present?

- It is generally not recommended to ignore OBDII codes like P164C, as they can indicate underlying issues that may affect the vehicle's performance and safety. It's best to address the problem promptly.

7. Can I reset OBDII code P164C on my own?

- While you can clear the code using an OBDII scanner, it is crucial to investigate and resolve the root cause of the issue to prevent the code from reappearing.

8. Is OBDII code P164C specific to certain car makes and models?

- OBDII code P164C can appear in various car makes and models that are equipped with a start-stop system, but the specific diagnostic and repair procedures may vary.

9. Will OBDII code P164C cause any drivability issues?

- Depending on the severity of the problem, OBDII code P164C can potentially cause drivability issues such as engine stalling, rough idling, or difficulty starting the vehicle.

10. How much does it typically cost to repair OBDII code P164C?

- The cost of repairing OBDII code P164C can vary depending on the underlying cause, parts needed for replacement, labor costs, and whether the repair is done at a dealership or an independent mechanic.

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