What Does P0172 Mean on Your 2024 Nissan Rogue?
A P0172 code on the 2024 Nissan Rogue means the engine control module has detected that Bank 1 is running too rich. The 2024 Rogue is powered by the innovative 1.5L VC-Turbo (Variable Compression Turbo) three-cylinder engine producing 201 horsepower. This is an inline engine with only one bank, so P0172 affects the entire engine.
The VC-Turbo engine adjusts its compression ratio between 8:1 and 14:1 for optimal performance and efficiency. A rich condition undermines this sophisticated system, wasting fuel and potentially damaging the catalytic converter.
Common Symptoms You May Notice
- Check engine light on
- Reduced fuel economy
- Rough or unstable idle
- Black exhaust smoke
- Fuel smell at the tailpipe
- Sluggish response under load
Top Causes of P0172 on the 2024 Rogue
- Dirty MAF sensor - The mass airflow sensor can accumulate contamination even on a new vehicle. A dirty MAF underreports airflow, causing excess fueling.
- Turbo boost leak - The 1.5L VC-Turbo has charge piping that can develop leaks at connections, causing air loss after the MAF sensor.
- Faulty upstream O2 sensor - A defective oxygen sensor, possibly a manufacturing flaw, causes incorrect fuel trim calculations.
- EVAP purge valve malfunction - A stuck-open purge valve allows excess fuel vapors into the intake.
How to Diagnose the Problem
Scan for codes and review freeze frame data. Check STFT and LTFT values. Negative LTFT past -10% confirms the rich condition.
Clean the MAF sensor with dedicated cleaner. Inspect boost pipe connections for leaks. Monitor the upstream O2 sensor; it should oscillate between 0.1V and 0.9V.
Repair Options and Cost Estimates
- MAF sensor cleaning or replacement: Cleaning under $10. New sensor $45-$145 plus $40-$90 labor.
- Boost leak repair: Parts $15-$65. Labor $60-$155.
- O2 sensor replacement: Parts $45-$140. Labor $60-$125.
- EVAP purge valve: Parts $20-$50. Labor $45-$90.
Can You Fix This Yourself?
Since the 2024 Rogue is under factory warranty, take it to the Nissan dealer. Manufacturing defects will be repaired at no charge. For out-of-warranty situations, MAF cleaning is easy and boost hose inspection is simple.
Prevention Tips
- Follow the factory maintenance schedule
- Use quality fuel from reputable stations
- Address check engine lights promptly
- Keep all service records for warranty claims