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1997-2004 FORD F-150
4.2L V6•4WD•AUTOMATIC•gas
49 active safety recalls on this vehicle — view recalls
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Repairs0Labor519Torque3580Fluid10DTC968Battery1Maintenance0Recalls49
P1102moderate severityPowertrain

MAF Sensor In Range But Lower Than Expected

on 1997-2004 Ford F-150 4.2L V6 · 4WD

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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