P2090 fault code: what it means

P2090: Exhaust variable valve timing oil control valve (OCV) circuit low. Exhaust VVT is held fully advanced; slight power loss.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

exhaust OCV
open or shorted wiring, ENGINE2 fuse
PCM

P2090 by make

Mazda

Exhaust variable valve timing oil control valve (OCV) circuit low. Exhaust VVT is held fully advanced; slight power loss.

Usual causes: exhaust OCV; open or shorted wiring, ENGINE2 fuse; PCM

What the repair usually costs

A/C compressor replace incl. drier and flush (European)NZ$1,560–NZ$3,200 · A$1,490–A$3,050

Not sure what P2090 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.