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P1204 Acura Code - Fuel System Failure Caused No. 4 Cylinder Misfire

Quick Answer

The P1204 diagnostic trouble code for Acura vehicles indicates a fuel system failure that has led to a misfire in the No. Common causes include Faulty fuel injector in the No, 4 cylinder, Clogged fuel filter restricting fuel flow. 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
P1204 Acura indicates Fuel System Failure Caused No. 4 Cylinder Misfire.
Common causes
Common causes include Faulty fuel injector in the No, 4 cylinder, Clogged fuel filter restricting fuel flow.
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 20, 2024
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Code P1204 Acura Description

The P1204 diagnostic trouble code for Acura vehicles indicates a fuel system failure that has led to a misfire in the No. 4 cylinder. This means that there is an issue with the fuel delivery or combustion process specifically affecting the fourth cylinder of the engine. This can result in poor engine performance, reduced fuel efficiency, and potentially even engine damage if not addressed promptly.

OBDII Code P1204 Acura - Fuel System Failure Caused No. 4 Cylinder Misfire
P1204 Acura Code - Fuel System Failure Caused No. 4 Cylinder Misfire

Common Causes of P1204 Acura

  1. Faulty fuel injector in the No. 4 cylinder
  2. Clogged fuel filter restricting fuel flow
  3. Ignition system issues such as a faulty spark plug or ignition coil
  4. Vacuum leak affecting the fuel-air mixture
  5. Fuel pump malfunction affecting fuel pressure

Symptoms of P1204 Acura

  1. Rough idle or vibrations felt while driving
  2. Loss of power or acceleration
  3. Engine hesitation or stumbling
  4. Increased fuel consumption
  5. Illumination of the check engine light

How to Fix P1204 Acura

  1. Diagnose the specific cause of the fuel system failure leading to the No. 4 cylinder misfire using a scan tool and performing a visual inspection.
  2. Replace the faulty fuel injector, spark plug, ignition coil, or other components as needed.
  3. Clean or replace the fuel filter to ensure proper fuel flow to the cylinder.
  4. Inspect and repair any vacuum leaks in the intake system.
  5. Test the fuel pump and replace if necessary to restore proper fuel pressure.

Cost to Fix P1204 Acura

The cost of repairing a fuel system failure causing a No. 4 cylinder misfire in an Acura can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the problem, which can affect the overall cost. It is recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's make and model.

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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 P1204 Acura Code

1. What are the common symptoms of OBDII code P1204 in an Acura related to fuel system failure and no. 4 cylinder misfire?

The common symptoms include rough idling, decreased engine performance, poor fuel economy, and illuminated check engine light.

2. What are some possible causes of the P1204 code in an Acura indicating a fuel system failure leading to a misfire in the no. 4 cylinder?

Potential causes may include a faulty fuel injector, clogged fuel filter, issues with the fuel pump, vacuum leaks, or a problem with the fuel pressure regulator.

3. How can I diagnose the fuel system failure causing the no. 4 cylinder misfire in my Acura when encountering the P1204 code?

Diagnosis typically involves performing a fuel pressure test, inspecting the fuel injectors, checking for vacuum leaks, and ensuring proper fuel delivery to the affected cylinder.

4. Is it safe to continue driving my Acura with the P1204 code indicating a fuel system failure and no. 4 cylinder misfire?

It is not recommended to drive the vehicle for an extended period with this code present, as it can lead to further engine damage and potential safety hazards.

5. Can I repair the fuel system failure causing the no. 4 cylinder misfire in my Acura on my own?

While some basic inspections like checking for vacuum leaks can be done at home, diagnosing and repairing complex fuel system issues may require professional expertise and specialized tools.

6. How much does it typically cost to repair the fuel system failure leading to a no. 4 cylinder misfire in an Acura triggered by the P1204 code?

Costs can vary depending on the specific issue, but repairs related to fuel system failures and cylinder misfires can range from a few hundred to over a thousand dollars, including parts and labor.

7. Can a dirty or clogged fuel filter trigger the P1204 code in an Acura and cause a misfire in the no. 4 cylinder?

Yes, a dirty or clogged fuel filter can restrict fuel flow to the engine, leading to a lean condition in the affected cylinder and resulting in a misfire.

8. How urgent is it to address the P1204 code related to fuel system failure and no. 4 cylinder misfire in an Acura?

It is important to address the issue promptly to prevent further damage to the engine and ensure optimal performance and fuel efficiency of the vehicle.

9. Are there any preventive maintenance steps I can take to reduce the likelihood of encountering the P1204 code in my Acura?

Regularly changing the fuel filter, using high-quality fuel, and adhering to the manufacturer's recommended maintenance schedule can help prevent fuel system issues that may lead to misfires.

10. Can a malfunctioning fuel pressure regulator contribute to the occurrence of the P1204 code in an Acura and cause a misfire in the no. 4 cylinder?

Yes, a faulty fuel pressure regulator can disrupt the proper fuel pressure delivery to the engine, resulting in a misfire in the affected cylinder and triggering the P1204 code.

Discuss the causes and fixes for P1204 Acura OBDII Code

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  • I have a 1996 Acura 3.2tl v6, 5-20-22. I had a bank1 sensor 2 code#P0141 replaced, 6-23-22 replaced my starter, 6-29-22 check engine light come on and off, 6-29-22 I had a diagnosing test done, code P1204 fuel system No.4 cylinder misfire came up from test, I was driving my car I hit a pot hole and my car just stop on me while driving

    Reply to Comment

  • Just one cylinder misfire will not cause the engine to stall, there must be something else causing the engine to stall. Unfortunately, there are many things that could cause that problem. Do you have any other codes besides the P1204 code? any other symptoms prior to the engine stall?

    Reply to Comment