AutoCodes – Audi – P1204 Audi

P1204 Audi Code - Fuel Injector Circuit Cylinder 4 Electrical Malfunction

Quick Answer

P1204 Audi indicates Fuel Injector Circuit Cylinder 4 Electrical Malfunction. 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
P1204 Audi indicates Fuel Injector Circuit Cylinder 4 Electrical Malfunction.
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 4,267
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 11, 2019
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Code P1204 Audi Description

OBDII Code P1204 Audi - Fuel Injector Circuit Cylinder 4 Electrical Malfunction - AutoCodes.com
P1204 Audi Code - Fuel Injector Circuit Cylinder 4 Electrical Malfunction

What are the Possible Causes of the DTC P1204 Audi?

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

How to Fix the DTC P1204 Audi?

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 P1204 Audi 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 P1204 Audi Code

What does OBDII code P1204 mean for an Audi?

P1204 indicates an electrical malfunction in the fuel injector circuit for cylinder 4.

What are common symptoms of code P1204 in an Audi?

Symptoms include rough idling, engine misfires, reduced fuel efficiency, and potential difficulty starting the vehicle.

What causes the P1204 code to appear?

Common causes include a faulty fuel injector, wiring issues, poor electrical connections, or a malfunctioning PCM.

Can driving with a P1204 code damage my Audi's engine?

Yes, prolonged driving with this code can lead to engine misfires and damage to components like the catalytic converter.

How can I diagnose the P1204 code?

Start by inspecting the fuel injector for cylinder 4, checking the wiring and connectors for damage, and testing the injector's electrical resistance.

Is the fuel injector the only cause of code P1204?

No, the issue could also stem from wiring faults, bad connectors, or a problem with the PCM itself.

How do I fix code P1204 in my Audi?

Repairs may involve replacing the faulty injector, repairing damaged wiring, or addressing PCM-related issues.

Can I clear the P1204 code without fixing the problem?

While you can clear the code with an OBDII scanner, the issue will likely return if the underlying problem isn't resolved.

What tools are needed to troubleshoot P1204?

You'll need a multimeter to test electrical components, an OBDII scanner to read and clear codes, and possibly replacement parts like a fuel injector.

How much does it cost to repair code P1204?

Costs vary depending on the issue, but replacing a fuel injector typically costs between $150-$300, excluding labor.

Discuss the causes and fixes for P1204 Audi OBDII Code

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