What P0455 means
Evaporative Emission Control System Leak Detected (gross leak)
Common causes (general)
Before spending money on parts, verify the code with a scan tool and read freeze frame data. Freeze frame captures every sensor value at the moment the code set — this is often enough to figure out the root cause without further testing.
Manufacturer-specific descriptions
Different manufacturers use this code for slightly different failure modes. Here's what your specific make means by P0455:
| AUDI | Missing fuel cap, Defective or damaged fuel cap, Distorted or damaged Fuel Tank Filler Neck, Torn or punctured Evaporative system hose(s), Defective Fuel Tank Sending Unit gasket or seal, Split or damaged Carbon Canister, Defective Evaporative Vent Valve and or Evaporative Purge Valve, Defective or damaged fuel tank, Defective Fuel Tank Pressure Sensor |
| BMW | Evaporative Emission System Leak Detected (large leak) |
| DODGE | Large EVAP Leak |
| FORD | Evap Emission Control System Leak Detected (Gross Leak/No Flow) |
| MITSUBISHI | Evaporative Emission Control System Tank Detected (gross leak); EVAP.emission(gross leak) |
| NISSAN | Evaporative Emission Control System Tank Detected (gross leak) |
| VOLKSWAGEN | Evaporative Emission (EVAP) System Leak Detected |
Read this code on your own car
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