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P1348 fault code: what it means

P1348: Cylinder 4 misfire during start-up. Rough cold start; plug, coil or injector.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. worn spark plug
  2. weak ignition coil
  3. leaking injector

P1348 by make

BMW

Cylinder 4 misfire during start-up. Rough cold start; plug, coil or injector.

Usual causes: worn spark plug; weak ignition coil; leaking injector

Mini

Cylinder 4 misfire during start-up. Rough cold start; plug, coil or injector.

Usual causes: worn spark plug; weak ignition coil; leaking injector

What the repair usually costs

Not sure what P1348 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.