Ford
EGR cooler not cooling as well as it should. On Ranger/Everest diesels check for coolant loss and white smoke: EGR coolers can block or crack.
P2457 fault code: what it means
P2457: EGR cooling system performance: the EGR cooler is not cooling the gas as expected. Check for a leaking or blocked cooler.
Usual causes, most likely first
- blocked or leaking EGR cooler
- EGR cooler bypass valve fault
- low coolant
- faulty EGR temperature sensor
P2457 by make
GWM
GWM diesel ute: EGR cooler not cooling enough. Check for coolant loss.
LDV
LDV diesel: EGR cooler not cooling enough. Check for coolant loss.
What the repair usually costs
- EGR cooler replacement (diesel)NZ$1,130–NZ$3,690 · A$1,080–A$3,570
- Coolant flush and refill (car)NZ$150–NZ$290 · A$150–A$290
- Coolant flush and refill (SUV / ute / 4WD)NZ$220–NZ$450 · A$220–A$440
- Coolant flush and refill (European)NZ$240–NZ$520 · A$240–A$510
Not sure what P2457 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.