OBD2 Codes

P0101 – MAF Sensor Range/Performance

MAF sensor reading out of range

Details

The MAF sensor is reading outside normal range.

Typical causesDirty MAF sensor, faulty sensor, vacuum leak
SymptomsPoor performance, check engine light
SeverityMedium
DIY checksClean MAF sensor, check for vacuum leaks
ToolsOBD2 scanner, MAF cleaner

Utilities

Copy-paste helpers

Quick checklist

Clean MAF sensor, check for vacuum leaks

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FAQ

Common questions

What causes P0101?

Dirty MAF sensor, faulty sensor, vacuum leak

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