AutoCodes – Honda – P0204 Honda

P0204 Honda 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 Honda 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 914

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

What does this mean?

What are the Possible Causes of the DTC P0204 Honda?

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 Honda?

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 Honda 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 Honda code?

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

Need Help with the Code?

Get the P0204 Honda code diagnosed by a professional: Find a repair shop in your area

Information for Specific Honda Models

P0204 2016 Honda CR-V — No. 4 Cylinder Injector Circuit Malfunction
P0204 2017 Honda CR-V — No. 4 Cylinder Injector Circuit Malfunction
P0204 2018 Honda CR-V — No. 4 Cylinder Injector Circuit Malfunction
P0204 2019 Honda CR-V — No. 4 Cylinder Injector Circuit Malfunction
P0204 2020 Honda CR-V — No. 4 Cylinder Injector Circuit Malfunction
P0204 2021 Honda CR-V — No. 4 Cylinder Injector Circuit Malfunction

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 Honda Code

1. What are the common symptoms of OBDII code P0204 in a Honda, indicating a No. 4 cylinder injector circuit malfunction?

- Common symptoms include rough idling, engine misfires, loss of power, poor fuel efficiency, and potential stalling.

2. What are the possible causes of OBDII code P0204 in a Honda, signaling a fault in the No. 4 cylinder injector circuit?

- Potential causes include a faulty fuel injector, wiring issues, poor electrical connections, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the No. 4 cylinder injector circuit malfunction in my Honda triggering code P0204?

- Diagnose by checking the No. 4 injector for proper resistance, inspecting the wiring for damage, testing the injector circuit for continuity, and scanning for other related trouble codes.

4. Can driving with OBDII code P0204 on a Honda cause further damage to the vehicle?

- Continuing to drive with code P0204 may lead to engine damage, decreased fuel efficiency, and potential catalytic converter issues if left unresolved.

5. What repair tips can help fix the No. 4 cylinder injector circuit malfunction causing code P0204 in a Honda?

- Repair tips include replacing the faulty injector, repairing damaged wiring or connectors, ensuring proper ground connections, and resetting the ECM after repairs.

6. Is it safe to clear the OBDII code P0204 related to the No. 4 cylinder injector circuit malfunction in a Honda without fixing the underlying issue?

- Clearing the code without addressing the root cause can temporarily turn off the Check Engine Light but won't solve the actual problem, leading to potential recurring issues.

7. How much does it typically cost to repair OBDII code P0204 associated with the No. 4 cylinder injector circuit malfunction in a Honda?

- Repair costs can vary based on the specific problem, but expect to pay for the replacement injector, wiring repairs, and labor charges, which can range from $150 to $500 or more.

8. Can a DIY enthusiast with mechanical knowledge fix OBDII code P0204 linked to the No. 4 cylinder injector circuit malfunction in a Honda?

- DIY enthusiasts can attempt the repair if comfortable with automotive electrical systems, but it's recommended to consult a professional due to the complexity of diagnosing and fixing injector circuit issues.

9. Will OBDII code P0204 in a Honda reset on its own after the No. 4 cylinder injector circuit malfunction is resolved?

- Once the underlying issue causing code P0204 is fixed, the Check Engine Light may turn off automatically after a few successful drive cycles, indicating the problem has been resolved.

10. How often should the No. 4 cylinder injector circuit be inspected in a Honda to prevent OBDII code P0204 from occurring again?

- Regular maintenance checks, such as during tune-ups or when experiencing related symptoms, can help spot potential issues with the No. 4 cylinder injector circuit before they trigger code P0204.