AutoCodes – Hyundai – P0204 Hyundai

P0204 Hyundai Code - Injector Circuit Open- 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 Hyundai indicates Injector Circuit Open- 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 17,044
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0204 Hyundai 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 Hyundai - Injector Circuit Open- Cylinder 4 - AutoCodes.com
P0204 Hyundai Code - Injector Circuit Open- Cylinder 4

What are the Possible Causes of the DTC P0204 Hyundai?

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

How to Fix the DTC P0204 Hyundai?

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 Hyundai 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 Hyundai code?

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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 Hyundai Code

1. What are common symptoms of OBDII code P0204 (Injector Circuit Open - Cylinder 4) in a Hyundai?

- Common symptoms include engine misfires, rough idling, decreased fuel efficiency, and potentially a noticeable decrease in overall performance.

2. What are the possible causes of OBDII code P0204 in a Hyundai?

- The code P0204 may be triggered by issues such as a faulty fuel injector in cylinder 4, a wiring problem in the injector circuit, a bad injector driver in the engine control module, or a poor electrical connection.

3. How can I diagnose the cause of OBDII code P0204 in my Hyundai?

- To diagnose the cause of code P0204, you can perform a visual inspection of the injector and its wiring, use a multimeter to test the injector's resistance, check for continuity in the wiring harness, and inspect the engine control module for any signs of damage.

4. What are the recommended repair tips for fixing OBDII code P0204 in a Hyundai?

- Repair tips for resolving code P0204 include replacing the faulty fuel injector in cylinder 4, repairing or replacing damaged wiring in the injector circuit, ensuring proper electrical connections, and resetting the fault code after completing the repairs.

5. Can I continue driving my Hyundai with OBDII code P0204 present?

- It is not recommended to continue driving your Hyundai with code P0204 present, as it can lead to further engine damage, reduced fuel efficiency, and potential safety hazards. It is advisable to address the issue promptly.

6. How much does it typically cost to repair OBDII code P0204 in a Hyundai?

- The cost of repairing code P0204 in a Hyundai can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

7. Will resetting the OBDII code P0204 in my Hyundai make the issue go away permanently?

- Resetting the fault code may temporarily turn off the check engine light, but if the underlying issue causing code P0204 is not addressed and fixed, the code is likely to reappear once the problem resurfaces.

8. Are there any preventive measures to avoid OBDII code P0204 in a Hyundai?

- Regular maintenance, such as using quality fuel, keeping up with fuel injector cleaning, and addressing any engine performance issues promptly, can help prevent the occurrence of code P0204 in a Hyundai.

9. Can a DIY enthusiast with basic automotive skills fix OBDII code P0204 in a Hyundai?

- Depending on the exact cause of the code, some DIY enthusiasts with basic automotive skills may be able to address and fix code P0204 by following repair guides, using proper tools, and exercising caution.

10. How long does it take to repair OBDII code P0204 in a Hyundai at a professional repair shop?

- The repair time for code P0204 in a Hyundai at a professional repair shop can vary, but it typically takes around 1 to 3 hours, depending on the complexity of the diagnostic process and the required repairs.

Discuss the causes and fixes for P0204 Hyundai OBDII Code

  • Hyundai Elantra 1.6 gls 4gfc 2012 fault code P0204.

  • For the P0204 code, the most likely cause is the Fuel Injector #4. Before replacing the injector, you could start by using high octane gas and/or fuel additive to clean the fuel injectors.

  • Car idle rough and with a clucking sound when engine is reved between idle and 1500 rpm. Switch a/c on and clungking sound gets worse and enjine idel rough and uneven. When you unscreew oil filler cap there is a lot of smoke or gas pressure. Pcv valve can be the culprit!

  • This is ridiculous, I've had someone stick something into my gas tank, I've flushed the whole fuel system replaced everything from the fuel injectors the fuel pressure regulator the fuel filter the wires the MAF sensor cleaned the throttle body the fuel rail the gas tank everything. WTF I can't get it to close fuel injector circuit 4 for the life of me

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