P0103 – MAF Sensor Circuit High Input

Description

The ECM detects a high voltage signal from the MAF sensor, indicating excessive airflow or electrical fault.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor acceleration
  • Rich condition

Causes

  • Dirty MAF
  • Wiring short
  • Faulty MAF sensor
  • Air leaks

Diagnosis

  • Monitor MAF data
  • Inspect wiring
  • Check intake leaks
  • Test sensor

Repair

  • Clean or replace MAF
  • Repair wiring
  • Fix intake leaks

Related Problems

Related Fault Codes