P0201

What it means

An electrical fault has been detected in the cylinder 1 injector circuit — open winding, short to ground or short to supply. This typically disables that injector to protect the driver stage in the ECU; the cylinder runs without fuel and triggers a misfire code as well.

Is it safe to drive?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.

Most likely causes

• Injector winding failed open

  high

  One of the most commonly reported causes for this code — check this first.

• Wiring or connector fault

  medium

  A plausible cause — test and verify before replacing parts.

• ECU injector driver damaged

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P0201 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?