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P0676 fault code: what it means

P0676: Glow plug circuit fault, cylinder 6. Glow plugs on Mercedes diesels can seize and snap on removal, adding labour.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. failed glow plug
  2. wiring or connector fault
  3. glow plug control module

P0676 by make

Mercedes-Benz

Glow plug circuit fault, cylinder 6. Glow plugs on Mercedes diesels can seize and snap on removal, adding labour.

Usual causes: failed glow plug; wiring or connector fault; glow plug control module

What the repair usually costs

Not sure what P0676 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.