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P0455 Hyundai Code - EVAP Emission System Leak Detected Large Leak

- Code Popularity: 102,224 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Jun 14, 2020
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|Code P0455 Hyundai Possible Causes

  • Missing or loose fuel cap
  • Incorrect fuel filler cap used
  • Fuel filler cap remains open or fails to close
  • Foreign matter caught in fuel filler cap
  • EVAP canister or fuel tank leaks
  • EVAP system hose leaking
  • Fuel tank leaking

|How do I Fix the Code P0455 Hyundai?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your Hyundai have Safety Recalls? → Check here

|Code P0455 Hyundai Tech Notes

The P0455 it’s a very common code, because the code is set if the gas cap is loose or missing. Start by tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.

|What is the Cost to Diagnose the Code P0455 Hyundai?

Labor: 1.0

The cost of diagnosing the P0455 Hyundai code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|When is the Code P0455 Hyundai Detected?

Evaporative Emission System (EVAP) control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.

|What are Code P0455 Hyundai Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Possible a noticeable fuel odor caused by the release of fuel vapors

|Code P0455 Hyundai Description

This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.
OBDII Code P0455 Hyundai - EVAP Emission System Leak Detected Large Leak - AutoCodes.com
P0455 Hyundai Code - EVAP Emission System Leak Detected Large Leak

|Need More Information on the P0455 Hyundai Code?

Need more information on how to fix the P0455 Hyundai code? Get Access to Factory Service Manuals

|Need Help with the P0455 Hyundai Code?

Get the P0455 Hyundai code diagnosed by a professional: Find a repair shop in your area

|Code P0455 Hyundai comments

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