P0201 – Injector Circuit Malfunction (Cylinder 1)

Description

The injector circuit for cylinder 1 is malfunctioning.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor acceleration
  • Engine shaking
  • Check engine light

Causes

  • Faulty injector
  • Wiring issue
  • ECU driver fault
  • Low fuel pressure
  • Connector issue

Diagnosis

  • Check injector pulse
  • Inspect wiring
  • Test injector resistance
  • Check fuel pressure
  • Scan live data

Repair

  • Replace injector
  • Repair wiring
  • Fix connector
  • Repair ECU driver
  • Check fuel pressure

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