P205B fault code: what it means

P205B: AdBlue tank temperature sensor reading out of range. Can stop AdBlue dosing and heating.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

1. failed sensor inside the AdBlue tank unit
2. wiring

P205B by make

What the repair usually costs

• AdBlue tank assembly or SCR catalyst replacement (dealer part)NZ$3,150–NZ$8,600 · A$2,780–A$7,650

Not sure what P205B 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.