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P0172 on Dodge Hornet: Fix & DLC Location

Factory diagnostic troubleshooting wire for fault code P0172 (System Too Rich (Bank 1) - Symptoms, Causes & Step-by-Step Fix) 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)
Medium urgency level
Est. DIY Time
45 – 90 Min
Basic hand tools
Check P0172 On Another Dodge Model:

1. Symptoms of P0172 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 P0172, drivers commonly observe:

Check Engine Light on on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))
Strong unburnt fuel odor from exhaust on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))
Black carbon soot around exhaust tip on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))
Rough idle and engine bogging under throttle on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))
Noticeable drop in MPG 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%
Faulty or leaking fuel injector (Dodge OEM Part)
25%
Contaminated Mass Air Flow (MAF) sensor (Dodge OEM Part)
12%
Stuck closed EVAP canister purge valve (Dodge OEM Part)
8%
Excessive fuel pressure regulator failure (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

01
Clean MAF Sensor and Throttle Body

Use dedicated MAF cleaner to remove carbon buildup from sensor wires. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

02
Check Short Term & Long Term Fuel Trims

Use live OBD-II scanner data; negative trims beyond -10% indicate the ECU is cutting fuel. on the Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

03
Inspect Fuel Injector Leak-Down

Perform a fuel pressure leak-down test to identify injectors leaking raw gasoline into cylinders while parked. 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:

4. Dodge Hornet P0172 FAQs

What causes code P0172 to trigger on a Dodge Hornet?

On the Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)), P0172 is most frequently caused by Faulty or leaking fuel injector or Contaminated Mass Air Flow (MAF) sensor.

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 P0172?

Driveable short distances, but unburnt fuel can damage catalytic converters. Given that P0172 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.