P0101: Débitmètre d'air massique (MAF) — plage/performance du circuit
Débitmètre d'air massique (MAF) — plage/performance du circuit : Measured MAF airflow g/s deviates from calculated speed-density airflow (RPM × MAP × displacement).
| Trouble Code (DTC) | P0101 |
|---|---|
| Official SAE Definition | Débitmètre d'air massique (MAF) — plage/performance du circuit |
| Vehicle Subsystem | powertrain |
| Driving Severity | MEDIUM |
Observable Symptoms
- Hesitation or surging during acceleration
- Rough idle or stalling
- Rich or lean fuel trim shift
Most Probable Root Causes
- Contaminated MAF hot film/wire from dust or oiled air filter
- Torn intake accordion boot downstream of MAF sensor
- Restricted exhaust or clogged catalytic converter
Step-by-Step Diagnostic Procedure
- Inspect intake boot for splits after MAF sensor
- Read MAF g/s at warm idle (should roughly equal engine displacement in liters)
- Clean or replace MAF sensor