P0175 on the 2024 Dodge Hornet: What You Need to Know
Your 2024 Dodge Hornet — equipped with either the 2.0L Hurricane-based turbocharged four-cylinder (268 hp) or the 1.3L turbo PHEV in the R/T — is displaying a P0175 trouble code. This indicates the fuel system on bank 2 is running richer than the target 14.7:1 stoichiometric ratio. On a vehicle this new, this code typically points to a sensor issue, contamination, or possibly a software calibration concern rather than component wear.
What You'll Notice
- Check engine light (CEL) illuminated
- Fuel economy drop from the Hornet's typical 25-30 MPG combined
- Slight black exhaust smoke during acceleration, especially under boost
- Rough or unsteady idle
- Noticeable fuel odor from the exhaust
- Reduced turbo response or boost-related hesitation
Why Your 2024 Hornet Is Running Rich
1. MAF Sensor Contamination
The 2024 Hornet's 2.0L turbo uses a hot-film MAF sensor to measure intake air. Even on a new vehicle, exposure to dusty environments, an improperly seated air filter, or aftermarket intake modifications can contaminate the sensing element. A dirty MAF underreports airflow, causing the ECM to deliver excess fuel. Cleaning costs $10; sensor replacement is $120–$250.
2. PCM Software Calibration Error
First and second model-year vehicles commonly receive PCM software updates from the manufacturer. Stellantis may have identified fuel mapping errors that cause rich running under certain conditions (cold start, partial throttle, altitude changes). A PCM reflash at the dealer is free under warranty and takes about an hour.
3. Direct Injection Fuel Injector Issue
The Hornet's high-pressure direct injection system operates at pressures exceeding 2,900 psi. Manufacturing tolerances on individual injectors can result in one injector flowing slightly more than its target. On a new vehicle, this is likely a warranty-covered manufacturing defect. Out-of-warranty replacement costs $130–$220 per injector plus significant labor due to the DI system complexity.
4. Turbo Boost Control Problem
If the wastegate or electronic boost control solenoid isn't regulating properly, the engine may experience higher-than-intended boost. The ECM adds fuel as a protective measure during over-boost events, potentially triggering P0175. Wastegate actuator or solenoid replacement runs $150–$400.
How to Diagnose
- Visit your Dodge dealer first — check for TSBs and software updates applicable to the 2024 Hornet
- If DIY scanning, look for companion codes related to boost (P0234, P0299) or MAF (P0101, P0102)
- Check fuel trim data — any LTFT bank 2 reading below -8% on a new vehicle is abnormal
- Inspect the air filter housing and MAF sensor for obvious contamination
- Verify that no aftermarket modifications have been made to the intake or tune
Should You Be Concerned?
On a 2024 model, this is almost certainly a warranty-covered repair. Don't ignore it, but don't panic either. Schedule a dealer appointment within a week. Avoid extended highway drives under heavy load until the issue is resolved, as the close-coupled catalytic converter on the turbo engine is particularly vulnerable to damage from rich exhaust conditions.
Warranty and Repair Guidance
Your 2024 Hornet is fully covered under the 3-year/36,000-mile basic warranty and the 5-year/60,000-mile powertrain warranty. Any fuel system sensor, injector, or PCM calibration causing P0175 should be repaired at no cost. Do not attempt aftermarket repairs on a vehicle this new — it could complicate future warranty claims. Simply document the code with photos of your scan tool reading and schedule a dealer visit.