emanuals.ai

P219A Air-fuel ratio variation of cylinder, bank 1

Ask emanuals.ai about P219A

Air-fuel ratio variation of cylinder, bank 1, readable through chat.

Join the waitlistEarly access, email only.
System
Fuel / air
Component
Fuel injectors

Symptoms

  • Check engine light on
  • Misfire codes stored with it
  • Catalyst efficiency code (P0420 or P0430) stored with it

Common causes

  • Fuel injector wear or clogging
  • Valve clearance out of specification
  • Low compression in one cylinder
  • Carbon or sludge in the EGR passages
  • Carbon build-up in the intake or exhaust manifold, with an oil leak
  • Another related code stored first

Guides for this code

Pencil sketch of a Honda Odyssey in a garage
Diagnostics & Repair

P219A and P219B on a 2018-2019 Honda Odyssey: Causes and Fixes

JC Landry · Oct 27, 2026

Ask emanuals.ai about your car

Answers come from the actual factory manual for your make, model and year, with the page cited. Join the waitlist and we will email you when a spot opens up.

Invite-only beta. No spam, one email when your spot opens.

Ask emanuals.ai about your car

Answers come from the factory manual for your make, model and year, with the page cited. Join the waitlist and we will email you when a spot opens up.