P0175 on the 2024 GMC Yukon
The 2024 GMC Yukon features GM's Gen V small-block V8 engines — the 5.3L L84 (355 hp) or the 6.2L L87 (420 hp), both with Dynamic Fuel Management and direct fuel injection. Bank 2 is the passenger side of the V8 (cylinders 2, 4, 6, 8). P0175 at low mileage on a 2024 model typically indicates a sensor defect, early contamination, or ECM calibration issue.
Symptoms
- Check engine light illuminated
- Fuel economy below the 15-22 MPG range
- Rough idle
- Rich exhaust odor
- Reduced power feel
- DFM may operate inconsistently
Causes on a New 2024 Yukon
1. MAF Sensor Contamination or Defect — High Likelihood
The MAF sensor can develop contamination from PCV vapors even at low mileage. A factory-defective sensor is also possible. GM's direct injection V8 engines generate significant crankcase vapors that are routed through the intake tract, and the MAF element is the first component to be affected.
2. EVAP Purge Valve — Medium Likelihood
GM's EVAP purge valve is a known issue across the lineup, including brand-new vehicles. A valve that sticks open from a manufacturing defect feeds continuous fuel vapor into the intake, enriching the mixture. At $50-150 for parts and labor, it's the cheapest possible P0175 fix.
3. O2 Sensor Defect — Medium Likelihood
A factory-defective O2 sensor on Bank 2 can cause inaccurate mixture readings from day one. While uncommon, quality control can't catch every defective unit. GM's dealer diagnostic equipment performs precise sensor testing.
4. ECM Software Update — Low Likelihood
GM may release fuel mapping refinements or sensor threshold updates for the 2024 model year. A dealer software flash is quick and free under warranty.
What to Do
- Schedule a GMC dealer appointment — full warranty coverage
- Document symptoms and driving conditions
- Ask about TSBs and software updates
Cost Reference (If Out of Warranty)
- MAF sensor: $100–$260
- EVAP purge valve: $50–$150
- O2 sensor: $120–$300
- Software update: $0–$150
All covered under GM's 3-year/36,000-mile warranty.
Dealer Service Recommended
A 2024 Yukon under warranty should be serviced by the GMC dealer. Warranty covers all P0175 diagnosis and repair costs. Preserve your warranty and let the professionals handle it.