P0452
EVAP Control System Pressure Sensor Low Input
Generic code
Auxiliary Emissions Control
Low severity
Hard repair
Free on OBD DashX
Want real-world data on P0452?
See which problems come with P0452, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0452 means
- The fault code P0452 indicates that there is a problem with the evaporative emission control system pressure sensor circuit, where the input signal is lower than what is expected by the engine control module. This fault code can cause issues with the engine's performance and may fail emissions testing.
Possible symptoms
- Illuminated check engine light
- Failed emissions testing
- Difficulty starting the engine
- Reduced engine power or acceleration
Possible causes
- Faulty or failed evaporative emission control system pressure sensor
- Damaged or corroded wiring or connections within the circuit
- Loose or broken vacuum lines within the evaporative emission control system
- Failed engine control module (ECM)
Related parts
- Evaporative Emission (EVAP) Pressure Sensor: The EVAP system prevents petrol vapors from escaping into the atmosphere from the fuel tank and fuel system. The pressure sensor monitors the pressure in the EVAP system. Problems in this car's flow valve will lead to fuel loss
Possible solutions
- Replace the evaporative emission control system pressure sensor
- Inspect and repair any damaged or corroded wiring or connections within the circuit
- Inspect and repair any loose or broken vacuum lines within the system
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0452 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0452 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.