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P0201 fault code: what it means

P0201: Cylinder 1 fuel injector circuit fault (open or short); cylinder 1 will usually misfire.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. loose or corroded injector connector
  2. damaged injector wiring
  3. failed injector coil

P0201 by make

GWM

Injector cylinder 1 circuit fault.

Usual causes: injector wiring or connector; failed injector; ECM driver

Isuzu

Injector cylinder 1 circuit fault.

Usual causes: injector wiring or connector under the rocker cover; failed injector; ECM injector driver

LDV

Injector cylinder 1 circuit fault.

Usual causes: injector wiring or connector; failed injector; ECM driver

Mazda

Fuel injector No.1 circuit fault (open or abnormal). Seen on both SkyActiv-G and SkyActiv-D.

Usual causes: injector No.1 connector or wiring; fuel injector No.1; PCM connector

Mitsubishi

Injector 1 circuit fault. 4N15 injectors are a known wear item; a worn tip also makes more soot and loads the DPF.

Usual causes: failed injector (coil); injector wiring or connector fault; ECU injector driver fault (rare)

What the repair usually costs

Not sure what P0201 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.