P244B fault code: what it means

P244B: DPF differential pressure is too high; the filter is badly blocked with soot.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

short trips stopping regeneration
interrupted or failed regenerations
faulty DPF pressure sensor
engine making too much soot (EGR, injector, boost faults)

P244B by make

Holden

DPF differential pressure too high: the filter is restricting the exhaust more than it should. Often set with P2463.

Usual causes: DPF loaded with soot or ash; blocked DPF pressure sensor pipes; faulty DPF pressure sensor

What the repair usually costs

CVT valve body replacement (remanufactured, in car)NZ$1,280–NZ$2,420 · A$1,200–A$2,400

Not sure what P244B 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.