P0452: EVAP system pressure sensor circuit low input
You can keep driving. Get it checked when convenient.
Can I drive with P0452?
Yes, you can keep driving. Fuel tank pressure sensor signal wire shorted to ground; safe to keep driving.
What does P0452 mean?
P0452 stands for Evaporative Emission Control System Pressure Sensor Low Input.
Symptoms you may notice
- Steady check engine light with minimal drivability symptoms
- Normal engine power, idle, and acceleration
- Possible faint gasoline vapor smell near gas cap
How much does it cost to fix?
Repair costs for code P0452 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Short to ground in FTP sensor signal wire
- Failed internal FTP sensor
- Water intrusion in fuel pump module connector
- Open 5V reference wire
What to do next
- Unplug FTP sensor; check if voltage jumps to 5V (indicates bad sensor).
- Inspect wiring harness along the rear underbody for rubbing against chassis.
- Replace the tank pressure sensor.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0452 signals that the sensor reading is locked at 0 volts. Because fuel tank pressure sensors are frequently built into the fuel pump assembly or clipped to the tank top, replacing them may require lowering the gas tank. Driving is usually safe to drive for a short time, but get it checked until repairs are scheduled.