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P0264 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.


The P0264 DTC code is a diagnostic trouble code that pertains to the low cylinder 2 injector circuit. To put it simply, this suggests that you have some sort of problem with a fuel injection circuit for cylinder 2 within your vehicle’s engine which might lead to gas delivery problems or engine performance issues.


If a P0264 code is detected on the OBD in your car, it indicates that cylinder 2’s fuel injection system has an insufficient voltage condition. The correct operation of the fuel injection system may be affected due to this low voltage condition, resulting in poor combustion, decreased engine efficiency, and increased emissions.


It’s critical to pinpoint probable root causes for the P0264 DTC code to handle it successfully. These may consist of:

  • Fuel Injector Issue: A faulty fuel injector for cylinder 2 may result in low voltage situations and set off the P0264 error code.
  • wire or Connector Problems: Corroded or damaged fuel injector circuit wires, connectors, or terminals might interfere with the normal flow of electrical signals.
  • Issues with the injector control circuit: Code activation may be caused by problems with the injector control circuit, such as a short or open circuit.
  • PCM (Powertrain Control Module) Issues: Problems with the PCM, which controls the injector circuit, can lead to fuel delivery imbalances.


  • Understanding the symptoms linked to the P0264 error code might help you act quickly. Typical signs could include:
  • Reduced Engine Performance: The power and responsiveness of your engine may noticeably decline.
  • Engine misfires: Cylinder 2 may suffer from misfires, which will make the engine operate poorly.
  • Increased Emissions: Your car may emit more emissions than normal as a result of inefficient combustion.


For the P0264 code to be resolved successfully, an accurate diagnosis is necessary. Here is the normal procedure:

  • Scanner for OBD-II: To obtain the P0264 code and any associated issue codes, use an OBD-II scanner.
  • Visual Inspection: Check for damage or corrosion on the wiring, connections, and terminals connected to the cylinder 2 fuel injector.
  • Electrical Testing: Conduct electrical tests on the injector control circuit to look for voltage, resistance, and continuity.
  • Fuel Injector Inspection: Test the fuel injector itself for proper operation and flow.

Common mistakes

  • Avoid making the following mistakes while dealing with the P0264 error:
  • Ignoring the Code: Ignoring a check engine light and any related codes may cause more serious and expensive problems in the future.
  • Insufficient diagnostic: Failure to conduct a thorough diagnostic may lead to pointless repairs.
  • DIY Without Knowledge: Attempting to repair the problem without the required knowledge might result in more harm.

How serious is this?

The severity of the P0264 code will depend on the nature and extent of the problem. Even if this is a small inconvenience, more serious engine problems, and greater emissions would result from the lack of clarity.

What repairs can fix the codeS?

repair manuals

The following repair options are frequently used to address the P0264 error code:

  • Fuel Injector Replacement: If the fuel injector for cylinder 2 is defective, it has to be changed.
  • Repair wires or Connectors: In the fuel injector circuit, repair or replace frayed, corroded, or broken wires, connectors, or terminals.
  • Injector Control Circuit Repair: Address any issues within the injector control circuit, such as shorts or open courses.
  • PCM Replacement or Reprogramming: If the PCM is at fault, it may need replacement or reprogramming.

Related codes

Several related codes might accompany the P0264 DTC, including:

  • P0260: Cylinder 2 Injector Circuit High
  • P0261: Cylinder 2 Injector Circuit Low
  • P0262: Cylinder 2 Injector Circuit Low


In conclusion, the P0264 DTC code is a diagnostic trouble code that indicates a problem with the engine’s cylinder 2’s fuel supply balance. Even though it can at first seem like a small issue, fixing it right away is crucial to avoiding bigger engine problems and higher emissions.

For your car to work at its best again, a competent mechanic’s accurate diagnostics and repairs are essential. If the P0264 error appears, acting quickly will help.

P0264 Code – What Does It Mean & How To Fix It