Audi
DPF regenerating too often. Short cold trips and towing are common reasons; pressure sensors can also cause it.
P2459 fault code: what it means
P2459: DPF regenerating too often. Short cold trips and towing are common reasons; pressure sensors can also cause it.
Usual causes, most likely first
- short trips in cold weather
- heavy load / towing
- faulty exhaust pressure sensor (G450/G451)
P2459 by make
Ford
DPF regenerating too often: the engine is having to clean the filter more often than it should, usually because too much soot is being made.
Mitsubishi
DPF regenerating too often.
Skoda
DPF regenerating too often. Short cold trips and towing are common reasons; pressure sensors can also cause it.
Toyota
DPF regenerating too often on 1GD-FTV diesels (Prado/Hilux): soot is building up faster than normal.
Volkswagen
DPF regenerating too often. Short cold trips and towing are common reasons; pressure sensors can also cause it.
What the repair usually costs
- CVT valve body replacement (remanufactured, in car)NZ$1,280–NZ$2,420 · A$1,200–A$2,400
- Turbocharger replacement (petrol)NZ$1,710–NZ$4,560 · A$1,560–A$4,240
- Intercooler or boost hose replacementNZ$250–NZ$1,780 · A$250–A$1,710
Not sure what P2459 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.