AutoCodes – Volkswagen – P0204 Volkswagen

P0204 Volkswagen 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 Volkswagen 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.

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Code Popularity 23,195

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
Cost to Diagnose
FAQs
Comments
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Code P0204 Volkswagen 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 Volkswagen - Injector Circuit Open Cylinder 4 - AutoCodes.com — P0204 Volkswagen Code - Injector Circuit Open Cylinder 4

What does this mean?

What are the Possible Causes of the DTC P0204 Volkswagen?

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 Volkswagen?

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

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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 Volkswagen Code

1. What does the OBDII code P0204 mean on a Volkswagen?

P0204 indicates an open circuit issue in the fuel injector circuit for cylinder 4, meaning the engine control module (ECM) is not able to properly control the injector.

2. What are the common symptoms of a P0204 code in a Volkswagen?

Symptoms may include rough idling, misfires, reduced fuel efficiency, poor acceleration, the check engine light turning on, and in severe cases, the engine stalling.

3. What causes the P0204 code in a Volkswagen?

Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or corrosion in the electrical connections.

4. Is it safe to drive with a P0204 code on my Volkswagen?

Driving with a P0204 code is not recommended as it can lead to poor engine performance, potential damage to other engine components, and unsafe driving conditions.

5. How do I diagnose a P0204 code on a Volkswagen?

Diagnosis typically involves inspecting the wiring and connectors for cylinder 4, testing the fuel injector's resistance with a multimeter, and checking the ECM for proper operation.

6. Can a bad fuel injector cause a P0204 code on a Volkswagen?

Yes, a malfunctioning or clogged fuel injector is a common cause of this code and should be tested or replaced if necessary.

7. How do I fix the P0204 code on my Volkswagen?

Repairs may include replacing the fuel injector, repairing or replacing damaged wiring or connectors, cleaning corroded connections, or in rare cases, replacing the ECM.

8. How much does it cost to fix a P0204 code on a Volkswagen?

The repair cost can range from $100 to $500 or more, depending on whether the issue is related to the wiring, fuel injector replacement, or ECM repair.

9. Can a dirty fuel injector trigger the P0204 code on a Volkswagen?

Yes, a clogged or dirty injector may disrupt the circuit and trigger the code. Cleaning the injector could potentially resolve the issue.

10. Will clearing the P0204 code fix the problem on my Volkswagen?

Clearing the code will remove it temporarily, but if the underlying issue is not resolved, the code will return. Proper diagnosis and repair are necessary.