Investigating the P0100 Code on Your 2022 Acura Integra
The P0100 code on your 2022 Acura Integra directs our investigation to the mass air flow sensor circuit in the turbocharged 1.5L four-cylinder (L15CA) engine. This revived nameplate shares its powertrain with the Honda Civic Si, and the compact turbo engine relies on precise MAF measurements for boost control and fuel management.
Understanding P0100 on the Integra's 1.5T
The Integra's 1.5T engine uses a relatively small displacement with turbo boost to produce its output, meaning accurate airflow measurement is critical across the entire operating range. The P0100 code indicates the ECM has detected a MAF sensor signal outside expected parameters. On the compact intake tract of this engine, contamination and connector issues are the most common culprits.
Prime Suspects in This Investigation
- Contaminated MAF sensor element (35%) — Oil film and dust accumulation on the hot-wire element. The compact intake tract can funnel contaminants more directly to the sensor.
- Charge piping leak (20%) — The turbo charge piping and intercooler connections can develop leaks, creating airflow measurement mismatches.
- MAF sensor connector issue (18%) — Corroded or loose connector pins causing intermittent signal faults.
- Intake ducting leak (15%) — Cracks or loose connections in the pre-turbo intake path between the air filter and turbo inlet.
- Failed MAF sensor (12%) — Internal element failure requiring sensor replacement.
Diagnostic Steps
- Connect a scan tool and confirm P0100. Record freeze frame data to understand the conditions when the code set.
- Inspect the MAF sensor connector for proper seating, corrosion, or damage.
- Monitor live MAF data — at idle the 1.5T should read approximately 2–5 g/s, scaling smoothly under boost.
- Inspect charge piping connections from turbo through intercooler to throttle body.
- Check pre-turbo intake ducting for cracks or loose fittings.
- Remove and clean the MAF sensor element with dedicated MAF cleaner spray.
Repair Costs and Options
The 2022 Integra may still be within Acura's 4-year/50,000-mile basic warranty and is within the 6-year/70,000-mile powertrain warranty. The MAF sensor may also qualify under the federal emissions warranty (8 years/80,000 miles).
- MAF sensor cleaning: $10–$15 for CRC MAF cleaner (DIY)
- MAF sensor replacement: $100–$200 OEM, $180–$350 installed
- Charge pipe repair: $0–$50 DIY, $75–$200 at a shop
- Intake duct replacement: $30–$100 parts, $80–$180 installed
DIY Feasibility
The Integra's engine bay is relatively accessible for a compact car. MAF sensor cleaning and replacement are straightforward DIY tasks. Charge piping inspection is manageable. The 6-speed manual transmission models offer slightly more engine bay space than CVT-equipped versions.