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P219B Air-fuel ratio variation of cylinder, bank 2

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Air-fuel ratio variation of cylinder, bank 2, readable through chat.

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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

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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.