2006 Mazda MX-5 Miata BaseFACTORY OEM SERVICE PROCEDURE

DTC P2097: Notes

DETECTION CONDITION AND POSSIBLE CAUSE (DTC P2097)

DTC P2097 Target A/F feedback system too rich
DETECTION CONDITION 
  • The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is less than specification, the PCM determines that the target A/F feedback system is too rich.
Diagnostic support note 
  • This is a continuous monitor. (Fuel system)
  • The MIL illuminates if the PCM detects the above malfunctioning condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction conditions during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Leakage exhaust gas
  • Rear HO2S malfunction
  • IAT sensor malfunction
  • ECT sensor malfunction
  • Front HO2S malfunction
  • Excessive fuel line pressure
  • Fuel pump unit malfunction
  • Purge valve malfunction
  • Insufficient engine compression
  • PCM malfunction
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.