Understanding P0175 on the 2022 Chevrolet Traverse
The P0175 code on your 2022 Traverse indicates the ECM has detected a rich fuel mixture on Bank 2. The 2022 Traverse uses the 3.6L V6 (LFY, 310 hp) with a nine-speed automatic. This is the final year of the second-generation Traverse before the 2024 redesign. Bank 2 is the cylinder bank opposite from cylinder one. At 20,000-40,000 miles, this is early for wear-related failures but right in the window for contamination issues.
Mature Platform
The 2022 Traverse benefits from years of refinement on the C1XX platform. The 3.6L V6 is a proven engine with well-known diagnostic paths. P0175 at this mileage is typically a contamination or early defect issue rather than normal wear.
Symptoms
- Check engine light active
- Fuel economy declining from the 18/27 MPG baseline
- V6 idle roughness
- Dark exhaust emissions
- Reduced throttle response
- Fuel smell from exhaust
Causes
1. MAF Sensor Contamination
Even at lower mileage, the MAF sensor can accumulate contamination from PCV blow-by and environmental exposure. The Traverse's large intake draws significant airflow, and any contaminants in the air reach the MAF. Clean it first as your cheapest diagnostic step.
2. O2 Sensor Issue
At 20,000-40,000 miles, an O2 sensor failure is premature and may be a defect. The Bank 2 sensor sits in the exhaust stream where it is exposed to high temperatures. Check the sensor's switching rate; a slow or biased sensor causes the ECM to over-fuel.
3. Direct Injector Problem
The 3.6L V6's direct injectors can develop early carbon deposits, especially with short commutes that do not allow full operating temperature. An injector that does not spray correctly or seal properly adds excess fuel to specific cylinders. Check for companion misfire codes.
4. Vacuum or EVAP Leak
A vacuum leak on the intake manifold or a stuck EVAP purge valve can disrupt fuel trim calculations. These are accessible and affordable repairs on the Traverse.
Diagnostic Steps
- Scan for all codes and review freeze frame data
- Monitor Bank 1 and Bank 2 fuel trims at idle and 2,500 RPM
- Clean the MAF sensor
- Test the Bank 2 O2 sensor with live data
- Check for EVAP system codes and test the purge valve
- Perform injector balance test
- Smoke test for vacuum leaks
Costs
MAF cleaning: under $15. O2 sensor: $130-$310. Injector: $200-$550. EVAP valve: $80-$200. The 2022 Traverse is under GM's powertrain warranty through 2027. Warranty should be your first option.
Priority
Fix within two to three weeks. The Traverse's 3.6L V6 converters are expensive, and protecting them is the main motivation for timely repair. Under warranty, the fix is free.