PowertrainP0442
InfoSeverity: Info - usually nothing urgent
Evaporative Emission Control System Leak Detected (Small Leak)
Key terms: EVAP: the system that traps fuel vapour · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
The fuel vapour (EVAP) system has a small leak, so fuel vapour is escaping into the air.
2Common causes
- Loose, missing, or faulty fuel cap
- Small leak in an EVAP hose or connection
- Faulty purge or vent valve seal
- Cracked charcoal canister
- Faulty fuel tank pressure sensor
3Can I drive?
Safe to drive; this only affects fuel vapour emissions. Check that the fuel cap is tight and have it checked before an emissions test.
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 43
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| BAIC Motor | P0442 | Evaporative Emission System Leak Detected Brand | Powertrain |
| Mercedes-Benz | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| BMW | P0442 | Minimal leak Brand | Powertrain |
| BYD | P0442 | EVAP. emission Brand | Powertrain |
| Chery | P0442 | EVAP. emission Brand | Powertrain |
| Chrysler | P0442 | Evaporative Emission (EVAP) system small leak Brand | Powertrain |
| Daewoo | P0442 | Evaporative Emission System Leak Detected Brand | Powertrain |
| DFFS | P0442 | Minor leak in evaporation system Brand | Powertrain |
| DFFX | P0442 | EVAP. emission Brand | Powertrain |
| DFXK | P0442 | Fuel tank leakage Brand | Powertrain |
| EOBD | P0442 | Leak EVAP detected Brand | Powertrain |
| Ford | P0442 | Troubleshooting DTC Brand | Powertrain |
| Geely | P0442 | EVAP. emission Brand | Powertrain |
| GM | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Great Wall | P0442 | EVAP. emission Brand | Powertrain |
| Hafei | P0442 | EVAP. emission Brand | Powertrain |
| Holden | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Honda | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Hyundai | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Isuzu | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Land Rover | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Mahindra | P0442 | EVP SML LEAK /P1442 Brand | Powertrain |
| Maserati | P0442 | Evaporative System Medium Leak Brand | Powertrain |
| Mazda | P0442 | Troubleshooting DTC Brand | Powertrain |
| Mitsubishi | P0442 | EVAP. emission Brand | Powertrain |
| Nissan | P0442 | EVP small leakage /P1442 Brand | Powertrain |
| Opel | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Peugeot | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Porsche | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Proton | P0442 | EVAP. emission Brand | Powertrain |
| Renault | P0442 | EVP SML Leak /P1442 Brand | Powertrain |
| Saab | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| MG (SAIC) | P0442 | Evaporative Emission System Leak Detected Brand | Powertrain |
| Smart | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| Sprinter | P0442 | Evaporative Emission Control System Leak Detected (Small Leak) SAE | Powertrain |
| SsangYong | P0442 | EVAP. emission system - leak detected (small leak) Brand | Powertrain |
| Subaru | P0442 | EVAP Control System Leak Detected Brand | Powertrain |
| Suzuki | P0442 | Evaporative emission control system leak detected (small leak) Brand | Powertrain |
| SWM Motor | P0442 | Small leakage in evaporation system Brand | Powertrain |
| Tata | P0442 | Evaporative Emission System Leak Detected Brand | Powertrain |
| Toyota | P0442 | Small leakage in fuel evaporation system Brand | Powertrain |
| Volkswagen | P0442 | EVAP Emission Control Sys: Small Leak 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 P0442 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Volkswagen | P044200 | Small leak detected in tank ventilation system Brand | Powertrain |
6Related codes
Browse Pxxx codes or P044xx codes.