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P0455 on Ford Maverick: Fix & DLC Location

Factory diagnostic troubleshooting wire for fault code P0455 (P0455: Evaporative Emission Control System Leak Detected (Gross Leak)) specifically on the Ford Maverick (2022–2026, 2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP)).

2022–2026
MaverickTruck
Sensor Voltage Ref
0.1V – 5.0V Ref
Maverick SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
Low urgency level
Est. DIY Time
45 – 90 Min
Basic hand tools
Check P0455 On Another Ford Model:

1. Symptoms of P0455 on Ford Maverick

When the Engine Control Module (ECM/PCM) on your Ford Maverick (2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP)) logs fault code P0455, drivers commonly observe:

Check Engine Light on on Ford Maverick (2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP))
Gas cap loose warning message on dashboard on Ford Maverick (2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP))
Slight fuel vapor odor near rear of vehicle on Ford Maverick (2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP))
Ford Maverick OBD-II Port Location
The 16-pin diagnostic connector is located Under driver side steering column. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Ford Maverick

Historical warranty claims and technical repair bulletins for Ford Maverick point to the following failure distribution:

55%
Missing, loose, or cracked gas cap seal (Ford OEM Part)
25%
Faulty EVAP purge control solenoid (Ford OEM Part)
12%
Stuck open EVAP vent valve (Ford OEM Part)
8%
Cracked EVAP charcoal canister vapor hose (Ford OEM Part)

3. Step-by-Step DIY Repair Guide for Ford Maverick

01
Inspect and Tighten the Gas Cap

Remove gas cap, inspect rubber O-ring for cracks, tighten until it clicks 3 times. on the Ford Maverick equipped with 2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP).

Required Tool: None
02
Replace Gas Cap with OEM Replacement

If the cap rubber is dried or cracked, replace with genuine OEM cap ($15). on the Ford Maverick equipped with 2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP).

Required Tool: New OEM Gas Cap
03
Test EVAP Purge Solenoid Under Hood

Disconnect electrical plug and vacuum hose. Apply 12V; verify valve seals tight when unpowered. on the Ford Maverick equipped with 2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP).

Required Tool: 12V Probe, Vacuum Pump
04
Inspect EVAP Canister Vent Valve Near Gas Tank

Check vent valve for road salt corrosion or spider nest clogs. on the Ford Maverick equipped with 2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP).

Required Tool: Flashlight, Jack Stands
05
Smoke Test EVAP System

Pump mineral oil smoke into EVAP port to reveal any hairline cracked lines. on the Ford Maverick equipped with 2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP).

Required Tool: EVAP Smoke Machine

Other Common Fault Codes on Ford Maverick

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Ford Maverick:

4. Ford Maverick P0455 FAQs

What causes code P0455 to trigger on a Ford Maverick?

On the Ford Maverick (2.5L Hybrid FWD/AWD (191HP) / 2.0L EcoBoost Turbo AWD (250HP)), 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 Ford Maverick?

On the Ford Maverick, the 16-pin DLC diagnostic connector is located Under driver side steering column. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Ford Maverick 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.