EV Diagnostics
Source-backed diagnostic reference

P1154 EV diagnostic code

HO2S Transition Time Ratio

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

  • BUICK: HO2S Transition Time Ratio Source
  • CADILLAC: HO2S Transition Time Ratio Source
  • CHEVY: HO2S Transition Time Ratio Source
  • CHRYSLER: HO2S Transition Time Ratio Source
  • FORD: Bank 2 Fuel Control Shifted Rich Source
  • GM: HO2S Transition Time Ratio Source
  • GMC: HO2S Transition Time Ratio Source
  • LINCOLN: Bank 2 Fuel Control Shifted Rich Source
  • MAZDA: Bank 2 Fuel Control Shifted Rich FAOSC Source
  • MERCURY: Bank 2 Fuel Control Shifted Rich Source
  • OLDSMOBILE: HO2S Transition Time Ratio Source
  • OTHER: Bank 2 Fuel Control Shifted Rich Source
  • SATURN: HO2S Transition Time Ratio Source
  • VOLKSWAGEN: Manifold Switch Over Malfunction Source

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