P0456 on CHRYSLER PACIFICA
EVAP System Leak Detected (very small leak)
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Chrysler Pacifica context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0456.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0456 Means on Your CHRYSLER PACIFICA
P0456 is a diagnostic trouble code indicating: EVAP System Leak Detected (very small leak). This code relates to the emission controls system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real CHRYSLER PACIFICA Owner Reports
Source: NHTSA Complaints Database
"Secondary pump needs to be replaced: the check engine light was on. the vehicle has under 55,000 miles and failed emissions test with the following codes: p0457, p0455, p0456. an evap system smoke test was performed and found a leaking secondary unit. needs secondary pump replaced."
"We have a 2006 chrysler pacifica that we purchased used in 2008 with 26k miles. in 2011 we started experience problems. simultaneously, we came up with codes p0700, p0420 and p0456 and have had to have the transmission rebuilt , the catalyst converter replaced and new fuel pump due to the evap leak."
"Fuel leak.. with gasoline odor and check engine light with canner code p0456, when i start up the car."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on CHRYSLER PACIFICA
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.