Ford DTC P1455 – Substantial Leak or Blockage in Evaporative Emission Control System
DTC P1455 meaning on Ford
DTC P1455 on a Ford vehicle indicates a Substantial Leak or Blockage in the Evaporative Emission Control System. This code is triggered when the PCM (Powertrain Control Module) detects a large leak or restriction in the system that controls fuel vapors from escaping into the atmosphere.
Ford DTC P1455 symptoms
Symptoms of DTC P1455 on a Ford may include:
- Check Engine Light illuminated
- Strong fuel odor near the vehicle
- Decreased fuel efficiency
- Rough idling or stalling
Ford DTC P1455 causes
Common causes of DTC P1455 on a Ford include:
- Loose or damaged fuel cap
- Cracked or disconnected EVAP system hoses
- Malfunctioning EVAP canister purge valve
- Faulty EVAP canister vent valve
Ford DTC P1455 seriousness
DTC P1455 should not be ignored as it can lead to increased emissions, reduced fuel efficiency, and potential damage to the engine over time. It is important to address this issue promptly to ensure proper vehicle operation and environmental compliance.
How to diagnose DTC P1455 on Ford
To diagnose DTC P1455 on a Ford, a mechanic may perform the following steps:
- Inspect the fuel cap for proper sealing
- Check EVAP system hoses for leaks or damage
- Test the EVAP canister purge valve and vent valve for proper operation
- Use a smoke machine to detect leaks in the EVAP system
How to fix DTC P1455 on Ford
To fix DTC P1455 on a Ford, the following steps may be taken:
- Tighten or replace the fuel cap if it is loose or damaged
- Repair or replace any cracked or disconnected EVAP system hoses
- Replace the malfunctioning EVAP canister purge valve or vent valve
- Clear the DTC and test drive the vehicle to ensure the issue is resolved
How to erase DTC P1455 on Ford
To erase DTC P1455 on a Ford, a scan tool capable of clearing fault codes is typically used. The following steps can be taken:
- Connect the scan tool to the vehicle’s OBD-II port
- Select the option to clear fault codes or DTCs
- Follow the on-screen prompts to erase the DTC P1455 code
- Once cleared, test drive the vehicle to ensure the code does not return
Recommended tools for Ford diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.