P0452 Code: Evaporative Emission Control System Pressure Sensor Low Input
🟢 Low severity · drivable
Safe to drive — this is an emissions-system fault, not an engine problem. Fix it before your next emissions test.
What P0452 means
The EVAP system pressure sensor is reporting voltage that's too low. This sensor monitors pressure inside the EVAP system to detect leaks.
Symptoms
- Check engine light is on
- Usually no driving symptoms
Common causes
- most common: Faulty EVAP pressure sensor
- common: Shorted or damaged wiring
- less common: Corroded sensor connector
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the EVAP pressure sensor | Yes | $50–150 |
| Repair shorted sensor wiring | Mechanic | $50–150 |
Frequently asked questions
Can I drive with a P0452 code?
Yes. It's an emissions fault and won't affect drivability.
What is the most common cause of P0452?
A faulty EVAP pressure sensor.
How much does it cost to fix a P0452?
Typically $50–$150 for a new pressure sensor.
Related codes
P0451
P0451 Code: Evaporative Emission Control System Pressure Sensor Range/Performance
P0453P0453 Code: Evaporative Emission Control System Pressure Sensor High Input
P0450P0450 Code: EVAP System Pressure Sensor/Switch A Circuit
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.