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P0101 — MAF Circuit Range/Performance

The MAF sensor values don't match what the PCM expects based on engine speed and throttle position.

Severity: HighRepair: $20-$350Difficulty: Easy

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Common symptoms of P0101

Common causes of P0101

Repair cost & difficulty

Typical cost to fix P0101: $20-$350 · Difficulty: Easy

Pro tip: Clean MAF first. If code returns, check for air leaks between MAF and throttle body — a cracked intake boot is very common.

Vehicles commonly affected

All makes — very common on GM and Nissan

Related trouble codes

P0100P0102P0171

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.