The Lemon IndexThere's a large leak in the fuel vapor system.
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
Gas cap loose or missing. Then: disconnected or cracked EVAP hose; purge or vent valve stuck open.
Owners named P0455 in 74 complaints to the U.S. government, most often on the GMC Envoy.
Cars owners report it on
Complaints that name P0455, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2004 GMC Envoy · 2015 Kia Soul · 2010 Ford Fusion · 2011 Ford Fusion · 2011 Chevrolet Suburban
The details
What P0455 means
There's a large leak in the fuel vapor system. Often it's just a gas cap left loose or off.
Can I drive with P0455?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
18% of the owner complaints that name P0455 also say the car stalls or shuts off. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P0455
- Gas cap loose or missing
- Disconnected or cracked EVAP hose
- Purge or vent valve stuck open
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Stalls or shuts off: 18% of complaints
- Warning lights and electrical faults: 14% of complaints
- Fuel smell or fuel leak: 11% of complaints
- Loses power or goes into limp mode: 11% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P0455 most
2004 GMC Envoy (5), 2015 Kia Soul (3), 2010 Ford Fusion (2), 2011 Ford Fusion (2), 2011 Chevrolet Suburban (2).
Related codes
P0456 P0457 P0452 P0451 P0460 P0449 P0461 P0448
Quick answers
What does P0455 mean?
Evaporative Emission System Leak Detected (Large Leak). There's a large leak in the fuel vapor system. Often it's just a gas cap left loose or off.
Can I drive with P0455?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
What causes P0455?
Gas cap loose or missing; Disconnected or cracked EVAP hose; Purge or vent valve stuck open.
Counts: NHTSA owner complaints whose text names P0455. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.