P0103Infiniti G37Years: 1996 - 2026
Mass Air Flow (MAF) Circuit High Input
Reviewed by ASE Certified Technician
What does this mean?
Code P0103 indicates the PCM has detected an abnormally high voltage signal from the MAF sensor. This suggests the sensor is reporting more air flow than the engine can physically consume.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Infiniti G37 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
Advertisement (In-Article)
Common Causes
Faulty Mass Air Flow (MAF) sensor
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
PCM/ECM software needs update (TSB)
Symptoms to Watch For
- Check Engine Light is illuminated
- Rough or unstable idle
- Black smoke from exhaust (running rich)
- Decreased fuel economy
- Hesitation or stumble during acceleration