AutoCodes – Acura – P0204 Acura

P0204 Acura Code - No. 4 Cylinder Injector Circuit Malfunction

Quick Answer

The injector supplies fuel to the engine and is controlled by the Powertrain Control Module (PCM) ON/OFF command. Common causes include Faulty No, 4 Cylinder Injector, No. 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 Acura indicates No. 4 Cylinder Injector Circuit Malfunction.
Common causes: Common causes include Faulty No, 4 Cylinder Injector, No.
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.

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Code Popularity 431

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 Aug 15, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0204 Acura Description

The injector supplies fuel to the engine and is controlled by the Powertrain Control Module (PCM) ON/OFF command. In the PCM, the injector driver receives a drive command from the Central processing unit (CPU) and drives the injector. The CPU monitors injector currents and returns a signal from the injector driver to monitor the terminal voltage of PCM. If the monitored conditions are abnormal for a specified time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0204 Acura - No. 4 Cylinder Injector Circuit Malfunction - AutoCodes.com — P0204 Acura Code - No. 4 Cylinder Injector Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0204 Acura?

Faulty No. 4 Cylinder Injector
No. 4 Cylinder Injector harness is open or shorted
No. 4 Cylinder Injector circuit poor electrical connection
Faulty Injector Relay
Faulty Powertrain Control Module (PCM)
Faulty High Pressure Fuel Pump

How to Fix the DTC P0204 Acura?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0204 Acura 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.

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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 P0204 Acura Code

1. What are common symptoms of an OBDII code P0204 in an Acura related to the No. 4 cylinder injector circuit malfunction?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential stalling of the vehicle.

2. What are some possible causes of the No. 4 cylinder injector circuit malfunction in an Acura triggering the OBDII code P0204?

- Potential causes may include a faulty fuel injector in the No. 4 cylinder, wiring issues in the injector circuit, a defective Engine Control Module (ECM), or a poor electrical connection.

3. How can I diagnose the root cause of the No. 4 cylinder injector circuit malfunction in my Acura with the OBDII code P0204?

- To diagnose the issue, you may need to perform a thorough inspection of the No. 4 fuel injector, check the wiring for any damages or loose connections, and use a multimeter to test the injector's resistance.

4. Is it safe to continue driving my Acura with the OBDII code P0204 indicating a No. 4 cylinder injector circuit malfunction?

- It is not recommended to drive the vehicle with this issue as it may lead to further damage to the engine or catalytic converter. Immediate attention and repairs are advised.

5. Can I fix the No. 4 cylinder injector circuit malfunction triggering the OBDII code P0204 in my Acura by myself?

- If you have experience working with automotive electrical systems and diagnostics, you may be able to perform the repairs yourself. However, consulting a professional mechanic is recommended for accurate diagnosis and repairs.

6. Are there any specific repair tips for addressing the OBDII code P0204 related to the No. 4 cylinder injector circuit malfunction in an Acura?

- Some repair tips include checking the fuel injector connector for corrosion, ensuring proper voltage supply to the injector, and inspecting the injector for clogs or leaks.

7. Will resetting the OBDII system clear the P0204 code related to the No. 4 cylinder injector circuit malfunction in my Acura?

- While resetting the system may temporarily clear the code, it will not fix the underlying issue causing the malfunction. It's essential to diagnose and repair the root cause to prevent the code from reappearing.

8. How much can I expect to pay for repairing the No. 4 cylinder injector circuit malfunction triggering the OBDII code P0204 in my Acura?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $150 to $500, including parts and labor. Complexity of the repair and labor rates in your area can also affect the total cost.

9. Are there any preventive measures I can take to avoid the No. 4 cylinder injector circuit malfunction and OBDII code P0204 in my Acura in the future?

- Regular maintenance, such as using quality fuel, keeping the fuel system clean, and inspecting the injector connections, can help prevent injector circuit malfunctions. Additionally, addressing any engine performance issues promptly can prevent further damage.