1. Home
  2. /
  3. Complete List of OBD2...
  4. /
  5. P0272 Code – What...

P0272 Code – What Does It Mean & How To Fix It

This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.


In the OBD II system, used in modern cars to check engine performance, P0272 is a special DTC code that can be found inside OnBoard Diagnostics II. P0272 is specifically related to a problem with one of the fuel injectors on your vehicle. Let’s take a look at the meaning of this code:


The OBDII code P0272 is a standard OBD II code that may have slightly different meanings based on your vehicle’s make and model. However, P0272 does indicate that there is a problem with the fuel injection system of cylinder 4 of your engine in nearly all cases. To ensure proper engine performance, the fuel injector must perform its task by delivering the correct amount of fuel into the combustion chamber.


Now that we understand the meaning of the P0272 code, let’s explore the common causes behind it:

  • Faulty Fuel Injector: The primary cause of P0272 is a malfunctioning fuel injector in cylinder 4. This can result from wear and tear, clogging, or electrical issues.
  • Wiring or Connector Problems: Damaged or corroded wiring or connectors associated with the fuel injector can trigger the code.
  • Fuel Delivery Issues: Inadequate fuel delivery to the cylinder, which can result from a clogged fuel line or a weak fuel pump, can lead to this code.


  • You could suffer several symptoms when the P0272 code is activated, including:
  • Check Engine Light: The check engine light on your dashboard turning on is the most typical sign.
  • Reduced Engine Performance: The effectiveness and power of your engine may start to decline.
  • Rough Idling: When the engine is idling, it may run unevenly or vibrate.
  • Increased Emissions: Due to faulty combustion, the vehicle may produce additional pollutants.


Diagnosing the P0272 code typically involves the following steps:

  • OBD-II Scanner: A mechanic will use an OBD-II scanner to retrieve the code and gather information about the issue.
  • Visual Inspection: The fuel injector, wiring, and connections will all be visually inspected to look for any evident issues.
  • Testing the Injector: The performance and resistance of the cylinder 4 fuel injector will be evaluated.

Common mistakes

  • Avoid making the following typical errors when working with the P0272 code:
  • disregarding the law: Ignoring the P0272 code and the check engine light might result in more serious engine issues and reduced fuel economy.
  • Replacing Parts Without Diagnosis: Avoid replacing the fuel injector or related components without proper diagnosis, as this can be costly and ineffective.

How serious is this?

The seriousness of the P0272 code depends on how it is addressed. If this is not addressed, it can lead to increased fuel consumption, reductions in engine performance, and the potential for more severe engine damage over time. These problems can be prevented, and your vehicle will run smoothly if you address them promptly.

What repairs can fix the codeS?

repair manuals

To resolve the P0272 code, you may need to:

  • Replace the faulty fuel injector in cylinder 4.
  • Repair or replace damaged wiring or connectors.
  • Address any fuel delivery issues, such as a clogged fuel line or a weak fuel pump.

Related codes

Other related codes that may appear alongside P0272 include:

  • P0267: Cylinder 3 Injector Circuit Low
  • P0268: Cylinder 3 Injector Circuit High
  • P0269: Cylinder 3 Contribution/Balance Fault


In conclusion, the P0272 DTC code shows that in cylinder 4 of your engine, there is an issue with the fuel injection system. This problem can have a detrimental effect on your vehicle’s performance and emissions but is easily resolved with the correct diagnosis and repair.

In the future, ignoring the code or making hasty decisions without a diagnosis may lead to more serious problems. It is best to contact a qualified mechanic if you are confronted with the P0272 code to ensure that your vehicle operates properly and effectively.

P0272 Code – What Does It Mean & How To Fix It