P0455
Evaporative Emission System Leak (Large)
System: EVAP
Severity: medium
What does P0455 mean?
The DTC P0455 (Evaporative Emission System Leak (Large)) is a fault code stored by the ECU when it detects a EVAP leak condition in the evap subsystem. It is commonly seen on European and Asian vehicles using Bosch, Continental, Siemens or Denso ECUs.
Common causes of P0455
- Loose fuel cap
- Cracked EVAP hose
- Failed canister vent valve
How to fix P0455
Tighten cap, smoke test EVAP.
Tuning approach with DaVinci Deluxe
For P0455, DaVinci Deluxe offers the following ECU map adjustments and software solutions:
- EVAP monitor disable
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