PowertrainP0452
CautionSeverity: Caution - get it checked when you can
Evaporative Emission Control System Pressure Sensor Low Input
Key terms: Catalytic converter: cleans the exhaust gases · EGR: exhaust gas recirculation, which cuts harmful gases · EVAP: the system that traps fuel vapour · Oxygen sensor: measures oxygen in the exhaust gas · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This range covers emissions control (EGR, EVAP, oxygen sensors and the catalytic converter), but some manufacturers also use P04 codes for oil-pressure, brake-fluid and coolant-level warnings.
2Common causes
- Clogged or faulty EGR valve
- EVAP system leak (hoses, canister, fuel cap)
- Faulty oxygen sensor
- Ageing catalytic converter
- Low oil, brake fluid or coolant (on some models)
- Wiring or connector fault
3Can I drive?
Do not assume this code is safe to drive. Check the description: if it names oil pressure, brake fluid, coolant, or a brake fault, stop safely and have it diagnosed before driving. Emissions-only codes (EGR, EVAP, catalyst) should still be checked before an emissions or roadworthiness inspection.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 38
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0452 | Vehicle Speed Sensor. Sensor B. - Incorrect Or Intermittent Data. / High Signal Brand | Powertrain |
| BAIC Motor | P0452 | Fuel tank pressure sensor voltage low Brand | Powertrain |
| Mercedes-Benz | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| BMW | P0452 | Evaporative Emission Contr. Syst. Press. Sensor Low Inp Brand | Powertrain |
| BYD | P0452 | EVAP. emission PRS. sensor low Brand | Powertrain |
| Chery | P0452 | EVAP. emission PRS. sensor low Brand | Powertrain |
| Chrysler | P0452 | Fuel Tank Pressure (FTP) sensor circuit low Brand | Powertrain |
| Daewoo | P0452 | Fuel Tank Pressure Sensor Low Voltage Brand | Powertrain |
| DFFS | P0452 | Fuel tank pressure sensor voltage low Brand | Powertrain |
| DFFX | P0452 | EVAP. emission PRS. sensor low Brand | Powertrain |
| DFXK | P0452 | Fuel tank pressure sensor circuit voltage low Brand | Powertrain |
| EOBD | P0452 | EVAP-system trykksensor/bryter 'A'-krets lav Brand | Powertrain |
| Fiat | P0452 | Implausible data received from restraints control module Brand | Powertrain |
| Geely | P0452 | EVAP. emission PRS. sensor low Brand | Powertrain |
| GM | P0452 | Fuel tank pressure (FTP) sensor circuit low voltage Brand | Powertrain |
| Great Wall | P0452 | EVAP. emission PRS. sensor low Brand | Powertrain |
| Hafei | P0452 | EVAP. emission PRS. sensor low Brand | Powertrain |
| Holden | P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage Brand | Powertrain |
| Honda | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Hyundai | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Isuzu | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Land Rover | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Maserati | P0452 | restraints control module data implausible Brand | Powertrain |
| Mitsubishi | P0452 | EVAP. emission PRS. sensor low Brand | Powertrain |
| Opel | P0452 | Fuel tank pressure (FTP) sensor circuit low voltage Brand | Powertrain |
| Peugeot | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Porsche | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Proton | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Saab | P0452 | BT circuito sensore FTP Brand | Powertrain |
| MG (SAIC) | P0452 | Evaporative Emission System Pressure Sensor/Switch Low Brand | Powertrain |
| Smart | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Sprinter | P0452 | Evaporative Emission Control System Pressure Sensor Low Input SAE | Powertrain |
| Subaru | P0452 | Fuel Tank Pressure Sensor Circuit Low Input Brand | Powertrain |
| Suzuki | P0452 | Evaporative emission control system pressure sensor low input Brand | Powertrain |
| SWM Motor | P0452 | Fuel tank pressure sensor short circuit to low voltage circuit Brand | Powertrain |
| Tata | P0452 | Evaporative Emission System Pressure Sensor/Switch Low Brand | Powertrain |
| Toyota | P0452 | Fuel tank pressure sensor voltage low Brand | Powertrain |
| Volkswagen | P0452 | EVAP system pressure sensor: signal too low Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 1
These 7-character codes are manufacturer-specific variants of P0452 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P045200 | EVAP. emission system - pressure sensor low input Brand | Powertrain |
6Related codes
Browse Pxxx codes or P045xx codes.