What this code means

The MAF sensor is providing a signal that is within the valid voltage range but consistently lower than the PCM expects for current conditions. This typically indicates reduced airflow detection.

Symptoms

• Check Engine Light
• Lean running condition
• Poor acceleration
• Rough idle

Common causes

• Dirty MAF sensor element
• Restricted air filter
• Intake air leak downstream of MAF
• MAF sensor degradation

Diagnostic steps

1. Clean MAF sensor with approved cleaner
2. Replace air filter
3. Inspect intake for leaks
4. Compare MAF readings to specifications

Repair notes

Clean MAF sensor. Replace air filter. Repair intake leaks.

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