P2200 fault code: what it means

P2200: NOx sensor circuit fault (diesels with SCR / AdBlue and some lean-burn petrol). BMW NOx sensors fail often.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

NOx sensor failed (heater or element)
sensor wiring

P2200 by make

BMW

NOx sensor circuit fault (diesels with SCR / AdBlue and some lean-burn petrol). BMW NOx sensors fail often.

Usual causes: NOx sensor failed (heater or element); sensor wiring

Ford

NOx sensor circuit fault on AdBlue diesels such as the 2.0 bi-turbo Ranger/Everest.

Usual causes: failed NOx sensor; damaged wiring or corroded plug; water in the loom

What the repair usually costs

AdBlue / SCR fault diagnosis (scan, NOx and doser tests)NZ$70–NZ$280 · A$80–A$300
AdBlue tank assembly or SCR catalyst replacement (dealer part)NZ$3,150–NZ$8,600 · A$2,780–A$7,650

Not sure what P2200 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.