LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2021 >> Insight EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC Diagnostics (3 Of 4) >> DTC Troubleshooting >> DTC P2199
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P2199

DTC P2199  : IAT Sensor 1-2 Incorrect Correlation

NOTE: Before you troubleshoot, review the general troubleshooting information .
DTC Description Confirmed DTC Pending DTC
P2199 IAT Sensor1-2 Incorrect Correlation    

DTC (PGM-FI)

  1. Connector visual check:

    Check for poor connections or loose terminals of these connectors.

    • ECT sensor 1
    • ECT sensor 2
    • MAF sensor/IAT sensor 1
    • IAT sensor 2

    Are the connection and terminals OK?

    YES 

    Replace IAT sensor 2 .

    NO 

    Repair the connections or terminals, then recheck.