P0452 fault code: what it means

P0452: EVAP pressure sensor circuit low.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

sensor wiring shorted to earth
failed tank pressure sensor

P0452 by make

Honda

Fuel tank pressure (FTP) sensor circuit low voltage.

Usual causes: FTP sensor; wiring shorted

Mercedes-Benz

Fuel tank pressure sensor signal low.

Usual causes: faulty tank pressure sensor; wiring short

Nissan

EVAP control system pressure sensor circuit low. Leak checks cannot run; no drive symptom.

Usual causes: EVAP pressure sensor faulty; wiring shorted

Subaru

EVAP system pressure sensor low input.

Usual causes: EVAP pressure sensor; wiring short

What the repair usually costs

CVT valve body replacement (remanufactured, in car)NZ$1,280–NZ$2,420 · A$1,200–A$2,400

Not sure what P0452 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.