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P1676 fault code: what it means

P1676: Diesel fuel injector correction code entered wrongly. Rough idle, smoke or knocking until corrected.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. wrong injector code entered
  2. injector swapped between cylinders

P1676 by make

Mazda

Diesel fuel injector correction code entered wrongly. Rough idle, smoke or knocking until corrected.

Usual causes: wrong injector code entered; injector swapped between cylinders

What the repair usually costs

Not sure what P1676 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.