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P14A3 fault code: what it means

P14A3: DPF pressure reading does not match atmospheric or boost pressure. DPF regeneration may be stopped.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. split or blocked DPF pressure hose
  2. faulty DPF pressure sensor
  3. wiring fault

P14A3 by make

BMW

DPF pressure reading does not match atmospheric or boost pressure. DPF regeneration may be stopped.

Usual causes: split or blocked DPF pressure hose; faulty DPF pressure sensor; wiring fault

Mini

DPF pressure reading does not match atmospheric or boost pressure. DPF regeneration may be stopped.

Usual causes: split or blocked DPF pressure hose; faulty DPF pressure sensor; wiring fault

What the repair usually costs

Not sure what P14A3 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.