P0457 on Dodge Hornet
Factory diagnostic protocol and troubleshooting wire for fault code P0457 specifically for the Dodge Hornet (2023–2026, 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)).
1. Symptoms of P0457 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 P0457, drivers commonly observe:
2. Most Likely Causes on Dodge Hornet
Historical warranty claims and technical repair bulletins for Dodge Hornet point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Dodge Hornet
Unscrew gas cap, inspect rubber seal for cracks, reinstall and turn until it clicks firmly 3 times. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).
Check the metal filler neck lip for rust, grit, or dings preventing a tight seal. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).
If rubber gasket is flattened or hardened, buy a factory OEM gas cap. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).
Clear DTCs with scanner, or drive vehicle for 3–5 days until the PCM runs an overnight EVAP vacuum decay test and turns off the light automatically. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).
Equipment for Diagnosing Dodge Hornet (P0457)
OEM Tethered Fuel Gas Cap with O-Ring
Tight-sealing factory fuel cap resolves common EVAP small/large leak codes without workshop visits.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on Dodge Hornet
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Dodge Hornet:
4. Dodge Hornet P0457 FAQs
What causes code P0457 to trigger on a Dodge Hornet?
On the Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)), P0457 is most frequently caused by Loose, unclicked, or forgotten gas cap or Cracked, dried out, or missing rubber O-ring gasket on fuel cap.
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 P0457?
Yes. Safe to drive indefinitely, but fuel vapors escape into the atmosphere. Given that P0457 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.