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P02A4 OBD2: Cylinder 3 - Injector Restricted

P02A4 OBD2: Cylinder 3 – Injector Restricted

The P02A4 OBD-II code indicates a restriction in the fuel injector for cylinder 3, which can lead to decreased engine performance and increased fuel consumption.

What Does the P02A4 Code Mean?

The P02A4 code is a trouble code that signifies an issue with the fuel injector in cylinder 3. This code is set when the engine control module (ECM) detects that the fuel injector is not delivering the proper amount of fuel to the engine, causing performance issues.

What Causes the P02A4 Code?

Several factors can trigger the P02A4 code, including:

  • Fuel injector failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues related to the fuel injector

What Are the Symptoms of the P02A4 Code?

When the P02A4 code is present, you may experience the following symptoms:

  • Decreased engine performance
  • Increased fuel consumption

How Serious Is the P02A4 Code?

The P02A4 code is considered urgent. If left unaddressed, it can result in significant engine damage or pose safety risks to the driver and passengers. Immediate action is recommended to prevent further complications.

How to Diagnose the P02A4 Code

Diagnosing the P02A4 code involves several steps:

  1. Use an OBD-II scanner to confirm the code.
  2. Inspect the wiring and connectors related to the fuel injector.
  3. Test the fuel injector for proper operation.
  4. Check the PCM for any faults.

Common Repairs for the P02A4 Code

Common repairs associated with the P02A4 code include:

  • Fuel Injector Replacement

How Much Does It Cost to Fix the P02A4 Code?

The cost to repair the P02A4 code can vary depending on the specific issue, but replacing a fuel injector typically ranges from $150 to $600, including parts and labor.

Can I Fix the P02A4 Code Myself?

While some experienced DIY mechanics may be able to replace a fuel injector, it is crucial to accurately diagnose the issue first. If you’re unsure about the source of the problem, seeking professional assistance is recommended to avoid unnecessary repairs.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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