AutoCodes – Ford – P0204 1999 Ford F150

P0204 1999 Ford F150 Code - Injector Circuit Malfunction Cylinder 4

Quick Answer

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. Common causes include Faulty fuel injector 4, Fuel Injector 4 harness is open or shorted, Fuel Injector #4 circuit poor electrical connection. 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: P0204 1999 Ford F150 indicates Injector Circuit Malfunction Cylinder 4.
Common causes: Common causes include Faulty fuel injector 4, Fuel Injector 4 harness is open or shorted, Fuel Injector #4 circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,538

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0204 1999 Ford F150 Description

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The ECM will trigger the P0204 code when the resistance or voltage drop at the injector 4 is out of specifications.

OBDII Code P0204 1999 Ford F150 - Injector Circuit Malfunction Cylinder 4 - AutoCodes.com — P0204 1999 Ford F150 Code - Injector Circuit Malfunction Cylinder 4

What does this mean?

What are the Possible Causes of the DTC P0204 1999 Ford F150?

Faulty fuel injector 4
Fuel Injector 4 harness is open or shorted
Fuel Injector #4 circuit poor electrical connection
Faulty PCM

How to Fix the DTC P0204 1999 Ford F150?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

The comprehensive component monitor (CCM) monitors the operation of the fuel injector drivers in the PCM. The test fails when the fuel injector does not operate electrically even though the harness assembly and fuel injectors test satisfactorily.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0204 1999 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0204 1999 Ford F150 code?

Need more information on how to fix the P0204 1999 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0204 1999 Ford F150 code diagnosed by a professional: Find a repair shop in your area

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 P0204 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P0204 (Injector Circuit Malfunction Cylinder 4) in a 1999 Ford F150?

A: Common symptoms may include misfires, rough idling, engine hesitation, decreased fuel efficiency, and the illumination of the check engine light.

2. What are some possible causes of OBDII code P0204 in a 1999 Ford F150?

A: Potential causes include a faulty fuel injector in cylinder 4, wiring issues in the injector circuit, a poor electrical connection, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the issue related to code P0204 in my 1999 Ford F150?

A: Diagnosing the problem may involve inspecting the wiring and connections related to the fuel injector in cylinder 4, testing the injector itself, and using a scan tool to check for any other related trouble codes.

4. Can I still drive my 1999 Ford F150 with OBDII code P0204 (Injector Circuit Malfunction Cylinder 4)?

A: It is not recommended to drive your vehicle with this code present, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

5. How do I repair OBDII code P0204 in my 1999 Ford F150?

A: Repairing this code may involve replacing the fuel injector in cylinder 4, repairing any damaged wiring or connections, and clearing the trouble code with a scan tool after the repairs are completed.

6. Is it possible to reset the check engine light after fixing OBDII code P0204 on my 1999 Ford F150?

A: Yes, the check engine light can be reset using a scan tool after the repairs have been made and the issue causing the code has been resolved.

7. What are some tips for preventing OBDII code P0204 in a 1999 Ford F150?

A: Regular maintenance, such as fuel injector cleaning and inspections, can help prevent issues that may lead to injector circuit malfunctions. Additionally, addressing any engine performance issues promptly can also help prevent this code from appearing.

8. Can a DIY enthusiast fix OBDII code P0204 on a 1999 Ford F150?

A: Depending on your level of experience and access to tools, it is possible to address this code yourself by following repair guides and instructions specific to your vehicle.

9. How long does it typically take to repair OBDII code P0204 in a 1999 Ford F150?

A: The repair time can vary depending on the exact cause of the issue, but it may take anywhere from a few hours to a full day to diagnose and fix the problem related to this code.

10. Are there any recalls or technical service bulletins related to OBDII code P0204 in a 1999 Ford F150?

A: It's recommended to check with a Ford dealership or online resources for any recalls or technical service bulletins that may be related to this specific OBDII code in your vehicle.