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P0261 - OBD-II Trouble Code

Our automotive experts have put together the following information about the P0261 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0261 code.

What Does P0261 Code Mean?

Fault Code Definition

Code P0261 is triggered when the voltage in the #1 Cylinder Injector Circuit is too low. The Powertrain Control Module (PCM) uses special transistors—called "drivers"—to turn the Fuel Injectors on and off in the Fuel Injection System.

P0261 Symptoms

  • Check Engine Light will illuminate
  • In some cases, the engine will misfire and have a rough idle
  • In some cases, the vehicle will get poor fuel economy

Common Problems That Trigger the P0261 Code

  • Defective Fuel Injector
  • Faulty or corroded Fuel Injector, wiring, and/or connections
  • Plugged Fuel Injector
  • Dirt in the Fuel Injector

Common Misdiagnoses

  • Fuel Injector or PCM is replaced when the problem is in the wiring and connections
  • Fuel Injector is replaced when the real problem is a poor ground

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