P0455 on a Honda CR-V
P0455 means evaporative Emission System Leak Detected (Large Leak). On the CR-V, a few causes come up far more than others.
What P0455 usually means on a CR-V
P0455 flags a large evaporative-system leak on the CR-V, most commonly a loose or worn gas cap, followed by Honda's canister vent valve. Fuel vapor is escaping instead of being captured and burned. It will not affect driveability but will fail emissions. Aging EVAP hoses complete the usual list.
Most common causes on the CR-V
- Loose or worn gas cap
The number-one P0455 cause on CR-Vs - check and re-seat the cap first.
- Canister vent valve stuck open
Honda vent valves stick, especially in salt-belt cars, so the system cannot seal.
- Cracked EVAP hose
Aged lines near the tank and canister split and leak large vapor volumes.
- Damaged canister
A cracked charcoal canister leaks and sets large-leak faults.
What P0455 costs to fix on a CR-V
A gas cap is a fifteen-to-thirty-dollar fix that clears many P0455s after a few drive cycles. The canister vent valve is a moderate, accessible part. Only a full canister replacement reaches the higher end, and it is still a minor repair.
Year, engine and mileage change the answer. Start a case and Redline weighs these causes against what your car shows, then names the check that would settle it.
Other codes on the Honda CR-V
Related symptoms
Honda CR-V problems & recalls by year
Based on widely reported patterns for this model; individual causes vary by year, engine and history. Generic P0455 behavior is covered on the main P0455 page. Confirm with a scan tool before buying parts.
P0455 on your CR-V?
Every problem becomes a Case. Tell Redline what your CR-V is doing: it shows what the evidence supports, what’s still missing, and what to check next, before you approve a repair.
“Inner pad ~1 mm. Outer pad 3 mm.”
Next: check the slide pins move freely before buying parts.