Auto Systems and Repair: P0201 - OBD-II Trouble Code

OBD II Fault Code

  • OBD II P0201

Fault Code Definition
The Powertrain Control Module (PCM) uses special transistors—called "drivers"—to turn the Fuel Injectors on and off in the Fuel Injection System. Code P0201 indicates a problem in the operation of the #1 Fuel Injector Circuit.

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 P0201 Code

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

Common Misdiagnosis

  • Fuel Injector or PCM is replaced when the problem is in the wiring and connections

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