P053A fault code: what it means

P053A: Crankcase vent (PCV) heater circuit open. Can lead to a frozen breather in cold weather.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

1. faulty PCV heater
2. wiring or plug fault

P053A by make

Not sure what P053A 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.