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P1667 Ford Code - IDM Circuit Malfunction

Quick Answer

The P1667 Ford diagnostic trouble code (DTC) refers to an issue with the IDM (Injector Driver Module) circuit. Common causes include Faulty IDM, Wiring or connector issues, Corrosion or damage to IDM circuit components. 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
P1667 Ford indicates IDM Circuit Malfunction.
Common causes
Common causes include Faulty IDM, Wiring or connector issues, Corrosion or damage to IDM circuit components.
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 12, 2024
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Code P1667 Ford Description

The P1667 Ford diagnostic trouble code (DTC) refers to an issue with the IDM (Injector Driver Module) circuit. The IDM is responsible for controlling the fuel injectors in a diesel engine, ensuring the correct amount of fuel is delivered for combustion. When this circuit malfunctions, it can lead to various performance issues in the vehicle.

OBDII Code P1667 Ford - IDM Circuit Malfunction
P1667 Ford Code - IDM Circuit Malfunction

Common Causes of P1667 Ford

  1. Faulty IDM
  2. Wiring or connector issues
  3. Corrosion or damage to IDM circuit components
  4. ECM malfunction
  5. Electrical interference or grounding issues

Symptoms of P1667 Ford

  1. Rough idling
  2. Engine misfires
  3. Decreased fuel efficiency
  4. Lack of power
  5. Stalling

How to Fix P1667 Ford

  1. Perform a thorough diagnostic scan to confirm the P1667 code and pinpoint the exact cause of the IDM circuit malfunction.
  2. Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections.
  3. Test the IDM and ECM for proper functionality, replacing any faulty components as needed.
  4. Clear the DTC and reset the ECM to see if the issue is resolved.
  5. Test drive the vehicle to ensure the symptoms have been addressed and the IDM circuit is functioning correctly.

Cost to Fix P1667 Ford

The cost of repairing a P1667 Ford IDM circuit malfunction can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates can influence the final cost, so it's recommended to get a quote from a reputable auto repair shop in your area.

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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.

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