SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 550 (ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3))DTC P0032 [L3]NOTES
2010 Mazda 5 Sport, 2.3 L, Standard

DTC P0032 [L3]: Notes

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Notes
WARNING: This page is about a different car, the 2008 Mazda 5. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0032 [L3] DETECTION CONDITIONS AND POSSIBLE CAUSES

DTC P0032 Front HO2S heater circuit high input
DETECTION CONDITION 
  • The PCM monitors the front HO2S heater output current at PCM terminal 2A. If the PCM turns the front HO2S heater to ON but the front HO2S heater circuit current is above 7 A  for 2s  , the PCM determines that the front HO2S heater circuit has malfunction.
    NOTE:
    • Front HO2S heater is controlled by duty signal.

Diagnostic support note 
  • This is a continuous monitor (HO2S heater).
  • 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 
  • Short to power supply in the wiring harness between front HO2S terminal E and PCM terminal 2A
  • Short circuit in the front HO2S or the PCM terminal
  • Font HO2S heater malfunction
  • PCM malfunction
G05542942
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

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

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote 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.