P0455 on Chrysler Pacifica: Fix & DLC Location
Factory diagnostic troubleshooting wire for fault code P0455 (P0455: Evaporative Emission Control System Leak Detected (Gross Leak)) specifically on the Chrysler Pacifica (2020–2026, 3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV).
1. Symptoms of P0455 on Chrysler Pacifica
When the Engine Control Module (ECM/PCM) on your Chrysler Pacifica (3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV) logs fault code P0455, drivers commonly observe:
2. Most Likely Causes on Chrysler Pacifica
Historical warranty claims and technical repair bulletins for Chrysler Pacifica point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Chrysler Pacifica
Remove gas cap, inspect rubber O-ring for cracks, tighten until it clicks 3 times. on the Chrysler Pacifica equipped with 3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV.
If the cap rubber is dried or cracked, replace with genuine OEM cap ($15). on the Chrysler Pacifica equipped with 3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV.
Disconnect electrical plug and vacuum hose. Apply 12V; verify valve seals tight when unpowered. on the Chrysler Pacifica equipped with 3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV.
Check vent valve for road salt corrosion or spider nest clogs. on the Chrysler Pacifica equipped with 3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV.
Pump mineral oil smoke into EVAP port to reveal any hairline cracked lines. on the Chrysler Pacifica equipped with 3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV.
Other Common Fault Codes on Chrysler Pacifica
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Chrysler Pacifica:
4. Chrysler Pacifica P0455 FAQs
What causes code P0455 to trigger on a Chrysler Pacifica?
On the Chrysler Pacifica (3.6L Pentastar V6 (287HP) / 3.6L Plug-In Hybrid eFlite EV), P0455 is most frequently caused by Missing, loose, or cracked gas cap seal or Faulty EVAP purge control solenoid.
Where is the OBD-II port located on my Chrysler Pacifica?
On the Chrysler Pacifica, the 16-pin DLC diagnostic connector is located Beneath driver steering column bezel. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Chrysler Pacifica with code P0455?
Yes. Completely safe to drive, but emissions test will fail. Given that P0455 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.