Investigating the P0100 Code on Your 2024 Buick Enclave
A P0100 code on your 2024 Buick Enclave signals a mass air flow sensor circuit malfunction in the 3.6L V6 engine. On a vehicle this new, this is a warranty-covered issue that your Buick dealer should diagnose and repair at no cost.
New Vehicle Context
The 2024 Enclave features a refreshed design but carries the proven 3.6L LGX V6. A P0100 on a current-model Enclave is most likely related to an assembly issue, connector problem, or ECM software calibration rather than any wear-related failure.
Prime Suspects in This Investigation
- Loose MAF sensor connector (30%) — A connector not fully engaged during assembly is the most common new-vehicle cause.
- ECM software calibration (25%) — GM releases periodic calibration updates for new model years that may address MAF signal thresholds.
- Intake assembly issue (20%) — A loose duct clamp or misaligned connection in the intake tract from the factory.
- Defective MAF sensor (15%) — A manufacturing defect in the sensor element.
- Wiring issue (10%) — A pinched or damaged wire in the MAF circuit from assembly.
What to Do
- Check the MAF connector is fully seated — the only recommended DIY step on a warranty vehicle.
- Schedule a dealer appointment mentioning the P0100 code and any symptoms.
- The dealer will use GDS2 (GM's factory diagnostic system) to diagnose and repair under warranty.
Warranty Coverage
Your 2024 Buick Enclave is fully covered under GM's 3-year/36,000-mile bumper-to-bumper warranty and 5-year/60,000-mile powertrain warranty. All P0100 diagnosis and repair should be free.
- Dealer diagnosis and repair: $0 under warranty
DIY Feasibility
Not recommended on a 2024 model under full warranty. Let your Buick dealer handle the diagnosis and repair to preserve warranty coverage.