2006 Mazda MX-5 Miata BaseFACTORY OEM SERVICE PROCEDURE

DTC P0132: Notes

DETECTION CONDITION AND POSSIBLE CAUSE (DTC P0132)

DTC P0132 Front HO2S circuit high input
DETECTION CONDITION 
  • The PCM monitors the input voltage from the front HO2S and the front HO2S output current when the engine is running. If the input voltage is more than 3.8 V  or the output current is more than 5 mA  , the PCM determines that the front HO2S circuit voltage is high.
Diagnostic support note 
  • This is a continuous monitor (HO2S).
  • The MIL illuminates if the PCM detects the above malfunction 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 condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Front HO2S malfunction
  • Connector or terminal malfunction
  • Short to power supply in wiring harness between front HO2S terminal A and PCM terminal 2AD
  • Short to power supply in wiring harness between front HO2S terminal B and PCM terminal 2Z
  • PCM malfunction
G04317709Courtesy of MAZDA MOTORS CORP.
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.