FTC Reader Disclosure: When you purchase or register through links on our site, we may earn an affiliate commission at no extra cost to you. Read our Editorial & Advertising Policy.

P0442

Dodge Hornet Hub All Dodge P0442Low Severity

P0442 on Dodge Hornet: Fix & DLC Location

Factory diagnostic troubleshooting wire for fault code P0442 (EVAP System Small Leak Detected - Diagnosis & Repair Guide) specifically on the Dodge Hornet (2023–2026, 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)).

2023–2026

HornetSUV

Sensor Voltage Ref

0.1V – 5.0V Ref

Hornet 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 P0442 On Another Dodge Model:

Dodge Charger Dodge Challenger Dodge Durango Dodge Hornet

1. Symptoms of P0442 on Dodge Hornet

When the Engine Control Module (ECM/PCM) on your Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)) logs fault code P0442, drivers commonly observe:

Check Engine Light on on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))

Intermittent faint fuel odor near rear wheel well on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))

Failed OBD-II smog check on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))

Dodge Hornet OBD-II Port Location

The 16-pin diagnostic connector is located Under driver steering column lower trim. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Dodge Hornet

Historical warranty claims and technical repair bulletins for Dodge Hornet point to the following failure distribution:

55%

Worn or cracked gas cap rubber seal (Dodge OEM Part)

25%

Small split in charcoal canister vapor line (Dodge OEM Part)

12%

Leaking EVAP vent valve solenoid (Dodge OEM Part)

* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Dodge Hornet.

3. Step-by-Step DIY Repair Guide for Dodge Hornet

Clean or Replace Gas Cap O-Ring

Inspect the gas cap gasket for micro-cracks or debris. Replace with OEM cap if hardened. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

Perform EVAP Smoke Machine Test

Inject mineral oil smoke into the EVAP service port to visually pinpoint the pinhole leak. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

Replace Vent Solenoid Valve

If smoke escapes from the canister vent, replace the stuck solenoid. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

Other Common Fault Codes on Dodge Hornet

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Dodge Hornet:

P0300Automotive

P0300: Random or Multiple Cylinder Misfi...

View Hornet Fix

P0420Automotive

P0420: Catalyst System Efficiency Below ...

View Hornet Fix

P0171Automotive

P0171: System Too Lean (Bank 1)...

View Hornet Fix

P0128Automotive

P0128: Coolant Temperature Below Thermos...

View Hornet Fix

P0455Automotive

P0455: Evaporative Emission Control Syst...

View Hornet Fix

P0101Automotive

Mass Air Flow (MAF) Sensor Circuit Range...

View Hornet Fix

4. Dodge Hornet P0442 FAQs

What causes code P0442 to trigger on a Dodge Hornet?

On the Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)), P0442 is most frequently caused by Worn or cracked gas cap rubber seal or Small split in charcoal canister vapor line.

Where is the OBD-II port located on my Dodge Hornet?

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

Can I safely drive my Dodge Hornet with code P0442?

Safe to drive. Will not damage engine internals. Given that P0442 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.