P02CA fault code: what it means

P02CA: Large turbocharger overboost on SKYACTIV-D two-stage turbo. PCM restricts power to protect the engine.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

regulating or wastegate valve sticking
vacuum hose or solenoid fault
boost sensor fault

P02CA by make

Mazda

Large turbocharger overboost on SKYACTIV-D two-stage turbo. PCM restricts power to protect the engine.

Usual causes: regulating or wastegate valve sticking; vacuum hose or solenoid fault; boost sensor fault

What the repair usually costs

Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510

Not sure what P02CA 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.