P0455 on Your 2024 Mercedes-Benz E-Class
A P0455 on your 2024 E-Class (W214) means the ECU found a large EVAP leak. This all-new generation is fully under warranty. Whether you have the E350 (2.0L turbo) or E450 (3.0L turbo inline-6), check the gas cap first.
Symptoms
- Check engine light with P0455
- Possible fuel smell
- Gas cap not seating
- EVAP monitor incomplete
Causes Ranked
- Gas Cap Seal (Very High Likelihood): Loose or factory defect. Warranty-covered.
- EVAP Purge Valve (Medium Likelihood): Manufacturing issue. Warranty-covered.
- Leak Detection Pump (Medium Likelihood): Mercedes LDP. Warranty-covered.
- Fuel Tank Vent Valve (Low Likelihood): Factory defect. Warranty-covered.
- ECU Calibration (Low Likelihood): Software update. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, visit your Mercedes dealer for free warranty repair.
Warranty
Your 2024 E-Class is covered by Mercedes' 4-year/50,000-mile warranty through 2028. Federal emissions (8yr/80k) extends through 2032.
Safe to Drive?
Yes. P0455 doesn't affect turbo performance, 4MATIC, AIRMATIC suspension, or any features.