Credov

P2149 fault code: what it means

P2149: Injector group B supply voltage circuit open. Two cylinders may cut out.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. injector harness
  2. failed injector
  3. engine computer driver

P2149 by make

Isuzu

Injector group B supply voltage circuit open. Two cylinders may cut out.

Usual causes: injector harness; failed injector; engine computer driver

Not sure what P2149 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.