LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2021 >> Insight EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Advanced Diagnostics (2 Of 2) >> Advanced Diagnostics >> DTC P24B9 >> Possible Cause
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Possible Cause

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • BARO sensor range/performance problem
  • Leak check pressure sensor range/performance problem
  • Manifold absolute pressure (MAP) sensor range/performance problem
  • Purge control solenoid failure
  • Air cleaner element clogged
  • Valve timing incorrect
  • Throttle body air leak
  • Intake manifold air leak