Investigating P0100 on Your 2020 Chevrolet Traverse
A P0100 code on your 2020 Chevrolet Traverse means the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. Your 2nd-generation Traverse uses the 3.6L V6, which relies on accurate MAF readings for proper fuel delivery across all six cylinders.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation during acceleration
- Reduced power—noticeable when fully loaded
- Poor fuel economy
- Possible stalling
Common Causes
- Contaminated MAF sensor (36%) — Five-plus years of oil, dust, and debris on the sensing element.
- Wiring or connector degradation (22%) — Heat and vibration.
- Faulty MAF sensor (18%) — Internal failure.
- Intake air leak (12%) — Loose boot or clamp.
- Air filter restriction (8%) — Overdue change.
- ECM issue (4%) — Rare.
Diagnostic Steps
- MAF sensor cleaning — Remove and clean with MAF cleaner spray.
- Connector inspection — Check for corrosion.
- Air filter replacement — Fresh paper filter.
- Intake inspection — Check all post-MAF connections.
- Scan tool data — Verify MAF readings.
- MAF replacement — If cleaning doesn't resolve it.
Repair Costs
- MAF cleaning: $10–$15 (DIY)
- Air filter: $15–$28 (DIY)
- MAF sensor: $135–$320
- Intake boot: $75–$195
- Wiring repair: $90–$270
Warranty
Your 2020 Traverse's basic warranty has expired. The federal emissions warranty covers the MAF sensor for 8 years/80,000 miles through 2028.