P2173 fault code: what it means

P2173: Throttle control sees too much air (high airflow). Usually an air leak or sticking throttle.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

air or vacuum leak
sticking throttle body

P2173 by make

Land Rover

Throttle control sees too much air (high airflow). Usually an air leak or sticking throttle.

Usual causes: air or vacuum leak; sticking throttle body

What the repair usually costs

Throttle body clean and idle relearnNZ$90–NZ$190 · A$100–A$200
Electronic throttle body replaceNZ$470–NZ$1,290 · A$440–A$1,190

Not sure what P2173 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.