What Does P0171 Mean on a 2024 Chevrolet Traverse?
A P0171 code on your 2024 Chevrolet Traverse means the engine control module detected a lean air-fuel mixture on Bank 1. The completely redesigned 2024 Traverse features a new 2.5L turbocharged four-cylinder engine producing 315 horsepower, replacing the previous 3.6L V6. Since this is an inline four-cylinder, Bank 1 is the only cylinder bank, meaning the entire engine is running lean.
As a first-year redesign with a brand-new engine, some early production issues are possible. Your best bet is taking it to the dealer under warranty for a free diagnosis and repair.
Symptoms You Might Notice
- Check engine light on
- Rough or unsteady idle
- Hesitation during acceleration
- Slightly reduced fuel economy
- Engine may feel less powerful than expected
- Possible turbo lag or boost issues
Common Causes of P0171 on the 2024 Chevrolet Traverse
- Boost or Intake Leak (30% likelihood) - The new turbo system uses pressurized charge pipes and connections. A loose factory clamp or defective gasket can allow unmetered air into the intake.
- MAF Sensor Contamination (25% likelihood) - Manufacturing debris or early contamination of the mass airflow sensor can cause inaccurate airflow readings.
- PCM Software Issue (25% likelihood) - First-year engines frequently receive software calibration updates. GM may have a TSB that addresses fuel trim calibration on the new 2.5L turbo.
- Fuel System Defect (20% likelihood) - A defective fuel pump, injector, or pressure sensor from the factory can cause lean conditions.
How to Diagnose the Problem
- Go to your Chevrolet dealer - Your 2024 Traverse is fully covered by warranty. Let the dealer handle everything at no cost.
- Ask about TSBs - First-year models often have technical service bulletins. Your dealer should check for any related to the 2.5L turbo engine.
- Scan for codes - If curious, use an OBD-II scanner to check for companion codes that help narrow the cause.
- Visual inspection - Look for obvious issues like loose intake connections or disconnected hoses.
Repair Options and Cost Breakdown
- Warranty repair - $0. Your 2024 Traverse has full bumper-to-bumper and powertrain warranty.
- Boost pipe or intake repair - $100 to $350 if out of warranty.
- MAF sensor service - $50 to $280 out of pocket.
- PCM software update - $0 to $150. Free under warranty.
- Fuel system repair - $400 to $800 if out of warranty.
Can You DIY This Repair?
On a brand-new vehicle under warranty, let the dealer handle repairs for free. DIY work on a new vehicle could complicate warranty claims. If you must check something yourself, visually inspecting charge pipe connections is safe and simple.
Prevention Tips
- Keep all scheduled dealer service appointments
- Use Top Tier gasoline as recommended by GM
- Report any performance changes to your dealer immediately
- Avoid aftermarket intake or boost modifications while under warranty
- Use OEM or quality equivalent air filters only