P2444 fault code: what it means

P2444: Secondary air injection pump stuck on, bank 1.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

failed pump relay (stuck closed)
pump control wiring fault

P2444 by make

Lexus

Secondary air injection pump stuck on, bank 1 on Lexus V8s with secondary air (1UR). The pump keeps running.

Usual causes: failed secondary air pump relay; pump or pump wiring fault; air switching valve fault

Not sure what P2444 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.