Feb 26, 2025 · The P0455 code means your vehicle has detected a large leak in the EVAP (Evaporative Emission Control) system, which is responsible for capturing and storing fuel vapors before they …

Aug 5, 2025 · If your car's ECU throws a P0455 trouble code, it's typically not serious but you still want to correct the problem. Here's how to fix DTC P0455...

You may be wondering, how do I fix trouble code P0455? Learn more about this helpful emissions system and how you can restore your vehicle and remove this trouble code.

Aug 19, 2024 · The P0455 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). A loose fuel tank filler cap is the most common cause that will trigger …

Jan 3, 2026 · A P0455 code indicates a gross leak in the evaporative emission control system, which can lead to increased emissions and decreased fuel efficiency. Common causes of a gross leak …

Mar 18, 2025 · What does the P0455 Evaporative emission (EVAP) system -large leak detected mean? P0455 code gets triggered when the Engine Control Module (ECM) detects a condition in the EVAP …

Jun 12, 2025 · Learn what the P0455 EVAP code means, common causes of large fuel vapor leaks, and how to diagnose and fix them. Stay safe and drive smart.

Diagnose and repair a vehicle trouble code p0455 which is EVAP emissions control system leak detected (no purge flow or large leak).

This guide explains the P0455 code’s meaning, symptoms, causes, and step-by-step diagnostics to fix it like a pro—potentially saving you $400-$1,000 from overpriced shop repairs. What Is a P0455 Code?

Aug 26, 2024 · DTC P0455 indicates a large leak in the evaporative emission control (EVAP) system. Possible causes: faulty gas cap, defective charcoal canister, bad purge or vent valve, or damaged …