top of page

P0102

Overview

Code

P0102

Code Type

P

Code Class

P0

System

Engine

Severity Level

Medium

Emissions Related

true

Drivability Impact

Minor

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0102 indicates that the mass air flow (MAF) sensor signal is lower than the minimum expected value detected by the ECM

Symptoms

Check Engine Light illuminated; Poor acceleration; Engine hesitation; Hard starting; Reduced fuel efficiency

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Low MAF input affects fuel delivery calculations and can cause improper air-fuel mixtures during engine operation

Possible Causes

Faulty MAF sensor; Contaminated MAF sensing element; Intake air leaks after the MAF sensor; Damaged wiring or poor electrical connections

Diagnostic Steps

1 Confirm the fault code using a scan tool; 2 Inspect the intake system for leaks; 3 Check MAF wiring and connectors for damage; 4 Clean the MAF sensor if necessary; 5 Monitor live MAF readings at idle and under load; 6 Replace the MAF sensor if low readings persist

Drive Safety Notes

The vehicle may be driven short distances, but drivability issues may worsen Prompt diagnosis is recommended to prevent further engine performance problems

bottom of page