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Engine-Codes – Generic – P167D

P167D Code - Control Module Ignition Coil Internal Circuit

Quick Answer

The diagnostic trouble code P167D indicates a problem with the control module's internal circuit related to the ignition coil. Common causes include Faulty ignition coil, Wiring harness issues, Malfunctioning control module. 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
P167D indicates Control Module Ignition Coil Internal Circuit.
Common causes
Common causes include Faulty ignition coil, Wiring harness issues, Malfunctioning control module.
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 Sep 13, 2024
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Code P167D Description

The diagnostic trouble code P167D indicates a problem with the control module's internal circuit related to the ignition coil. The ignition coil is a crucial component of the ignition system, responsible for converting low voltage from the battery into high voltage needed to create a spark in the spark plugs. This spark ignites the air-fuel mixture in the engine cylinders, powering the vehicle. When the control module detects an issue with the ignition coil's internal circuit, it can lead to misfires, poor engine performance, and potential damage to other components.

OBDII Code P167D - Control Module Ignition Coil Internal Circuit
P167D Code - Control Module Ignition Coil Internal Circuit

Common Causes of P167D

  1. Faulty ignition coil
  2. Wiring harness issues
  3. Malfunctioning control module
  4. Engine computer system problems
  5. Poor electrical connections

Symptoms of P167D

  1. Rough idling
  2. Hesitation during acceleration
  3. Reduced power
  4. Stalling
  5. Decreased fuel efficiency

How to Fix P167D

  1. Diagnose the specific cause of the P167D code using a diagnostic scanner.
  2. Inspect the wiring harness for any damage or loose connections.
  3. Test the ignition coil for proper function and replace if necessary.
  4. Check the control module for faults and replace if needed.
  5. Clear the trouble code and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P167D

The typical repair costs for addressing the P167D code can vary depending on the specific cause of the issue. On average, replacing an ignition coil can cost between $100 to $300, while a control module replacement can range from $200 to $500. Labor costs can add an additional $80 to $150 per hour, with the total repair bill potentially reaching $500 to $1000 or more. It is advisable to consult with a qualified mechanic or auto repair shop for an accurate cost estimate based on your vehicle's make and model, as well as the local labor rates.

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Code P167D 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 P167D Code

1. What are common symptoms of OBDII code P167D?

- Common symptoms include rough idling, misfires, loss of power, and illuminated Check Engine Light.

2. What does OBDII code P167D indicate?

- This code indicates a problem with the internal circuit of the ignition coil control module.

3. What are some possible causes of code P167D?

- Possible causes include a faulty ignition coil control module, wiring issues, or a poor electrical connection.

4. How can I diagnose the cause of OBDII code P167D?

- Diagnose the code by checking the ignition coil control module, inspecting the wiring for damage, and testing the electrical connections.

5. Can a DIYer repair OBDII code P167D?

- DIY repair is possible if you have the necessary tools and knowledge. Replacing the ignition coil control module may resolve the issue.

6. How urgent is it to address OBDII code P167D?

- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the engine or catalytic converter.

7. Is it safe to drive with OBDII code P167D active?

- It is generally safe to drive with this code, but it is recommended to limit driving until the issue is resolved to avoid further complications.

8. Can a bad ignition coil cause code P167D to appear?

- Yes, a faulty ignition coil can cause code P167D to appear due to issues with the ignition coil control module.

9. How can I prevent OBDII code P167D from recurring?

- Regular maintenance, such as checking and replacing ignition components as needed, can help prevent the recurrence of this code.

10. Is resetting the Check Engine Light enough to fix code P167D?

- Resetting the light may temporarily clear the code, but it will not fix the underlying issue causing code P167D. Proper diagnosis and repair are necessary.

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