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P1408 fault code: what it means

P1408: Suzuki code: manifold differential pressure (MDP) sensor circuit, used to check EGR operation on some models.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. faulty MDP sensor
  2. blocked or split sensor hose
  3. wiring or connector

P1408 by make

Suzuki

Suzuki code: manifold differential pressure (MDP) sensor circuit, used to check EGR operation on some models.

Usual causes: faulty MDP sensor; blocked or split sensor hose; wiring or connector

Not sure what P1408 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.