OBD Guide

P04ED

EVAP System Large Leak Detected - Fresh Air Side

P04ED is an OBD-II diagnostic trouble code meaning: EVAP System Large Leak Detected - Fresh Air Side. Common causes: damage to evap system hoses, purge valve malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Increased fuel consumption
  • Smell of gasoline in or around the car

Causes

  • Damage to EVAP system hoses
  • Purge valve malfunction
  • Depressurization of the fuel tank
  • Damage to the fuel tank cap

How to Fix

  1. Check the integrity of the EVAP system hoses
  2. Check the operation of the purge valve
  3. Inspect the fuel tank and cap for damage
  4. Perform a leak test on the EVAP system

Related codes

Error P04ED by Vehicle Brand

FAQ

What does the P04ED code mean?

P04ED is an OBD-II diagnostic trouble code that indicates: EVAP System Large Leak Detected - Fresh Air Side

What causes a P04ED error code?

The most common causes of P04ED include: Damage to EVAP system hoses; Purge valve malfunction; Depressurization of the fuel tank; Damage to the fuel tank cap.

How do I fix a P04ED diagnostic trouble code?

To fix P04ED: Check the integrity of the EVAP system hoses. Check the operation of the purge valve. Inspect the fuel tank and cap for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P04ED?

Limited driving only, diagnose soon

How much does it cost to fix P04ED?

The estimated repair cost for P04ED is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat