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P0289 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.


Let’s start by figuring out what P0289 implies. The generic OBD-II error number P0289 stands for “Cylinder 10 Contribution/Balance Fault.” The fuel and air mixture for the tenth cylinder of the engine is related to this code. An imbalance in the air/fuel mixture in cylinder 10 of the engine causes P0289 to be activated.


It’s clear what P0289 means: it suggests that cylinder 10 is not working as expected. A variety of factors can cause this, but we’ll be looking more closely at them.


P0289 can be caused by several underlying issues, including:

  • Faulty Fuel Injector: A malfunctioning fuel injector in cylinder 10 can disrupt the air/fuel balance, leading to this code.
  • Injector Wiring or Connector Problems: Damaged wiring or poor connections to the fuel injector can also cause this issue.
  • Fuel Delivery Problems: Inadequate fuel delivery to cylinder 10 can result in an imbalance.
  • Cylinder Compression Issues: Low compression in cylinder 10 can affect the air/fuel mixture and trigger P0289.
  • Faulty PCM (Powertrain Control Module): In rare cases, a malfunctioning PCM can misinterpret data and trigger this code.


P0289 symptoms can range, however, a few typical ones as follows:

  • Check Engine Light: The check engine light on your dashboard turning on is the main sign.
  • Engine Misfire: You may notice your engine misfiring or running roughly.
  • Reduced Power: The vehicle might exhibit reduced power and poor acceleration.


P0289 requires a methodical strategy for diagnosis, which could include:

  • Code Scan: Start by retrieving the P0289 problem code using an OBD-II scanner.
  • Visual examination: Look for glaring problems like frayed wire or harmed connections.
  • Fuel Injector Testing: Test the fuel injector in cylinder 10 for proper function.
  • Compression Test: Perform a compression test to assess cylinder 10’s compression.
  • Fuel Pressure Test: Ensure that there is adequate fuel pressure reaching the cylinder.

Common mistakes

When dealing with P0289, some common mistakes to avoid include:

  • Neglecting to address the issue promptly, can lead to more severe engine problems.
  • Replacing the fuel injector without verifying it’s the root cause.
  • Ignoring related trouble codes that may provide additional insights.

How serious is this?

P0289 is a serious disease, dependent on its cause. If this is not addressed, it may result in additional damage to the engine, lower fuel efficiency, and higher emissions. Consequently, the issue should be diagnosed and resolved without delay.

What repairs can fix the codeS?

repair manuals

To resolve P0289, you may need to:

  • Replace the faulty fuel injector in cylinder 10.
  • Repair or replace damaged wiring or connectors.
  • Address fuel delivery issues.
  • Address cylinder compression problems if present.
  • Rarely, replace a malfunctioning PCM.

Related codes

Other related trouble codes that you might encounter include P0288, P0290, and codes associated with specific cylinder misfires.


P0289, the Cylinder 10 Contribution/Balance Fault code, demands attention when it triggers your vehicle’s check engine light. You can effectively address this issue by understanding its meaning, causes, symptoms, and diagnostic procedures. To avoid further damage and maintain your vehicle’s performance and efficiency, it is important that you are diagnosed promptly and have the necessary repairs carried out. If you encounter P0289, seek professional assistance to ensure your vehicle is back on the road in optimal condition.

P0289 Code – What Does It Mean & How To Fix It