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P0456 on JEEP LIBERTY

Severity
Medium
NHTSA Reports
2
Most Affected
2005, 2012

What P0456 Means on Your JEEP LIBERTY

Real JEEP LIBERTY Owner Reports (Source: NHTSA Complaints Database)

"05 jeep liberty has had a code of p0456 small leak in the evap system. we took it to the dealership and they said that they couldn't find a problem and if the code came back it would most likely be the leak detection pump. the code came back two weeks later."

— 2005 JEEP LIBERTY owner • FUEL SYSTEM, OTHER • Filed 02/07/2008

"Fuel was spilling out underneath vehicle every time I filled up. The issue was that the plastic housing where the fuel filler tube connects to the gas tank hardened and deteriorated to a point where it begins to leak. That plastic appears not to be ethanol resistant."

— 2012 JEEP LIBERTY owner • FUEL/PROPULSION SYSTEM • Filed 01/11/2021

Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.

Common Causes of P0456 on JEEP LIBERTY

50%
50%

Percentages based on NHTSA complaint component analysis for this vehicle.

Complaint Trend by Year

2005
1
2012
1

What To Do Next

  1. 1
    Check for recalls on YOUR VIN

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.

  2. 2
    Get a proper diagnosis

    A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50-$150) pinpoints the root cause before you spend money on parts.

  3. 3
    Compare repair quotes

    Get 2-3 quotes. Dealer vs independent shop prices often differ 30-50% for the same repair.

P0456 on Other Vehicles

Data sourced from the National Highway Traffic Safety Administration (U.S. Department of Transportation) and the SAE J2012 OBD-II standard. Code definitions follow the SAE J2012 / ISO 15031-6 standard. Owner reports are filed directly with NHTSA by vehicle owners. This information is provided for educational purposes only and should not replace professional automotive diagnosis. Always consult a qualified mechanic for vehicle repair decisions.

Last updated: March 2026