DTC P0032: Notes
DTC P0032 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0032 |
Front HO2S heater circuit high input |
| DETECTION CONDITION |
- The PCM monitors the front HO2S heater output voltage. If the PCM turns the front HO2S heater on or off but the front HO2S heater circuit voltage remains high the PCM determines that the front HO2S heater circuit has a malfunction.
NOTE:
- The front HO2S heater is controlled by a duty signal.
Diagnostic support note
- This is a continuous monitor (HO2S heater).
- 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.
- DTCs are stored in the PCM memory.
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| POSSIBLE CAUSE |
- Front HO2S heater malfunction
- Connector or terminal malfunction
- Short to power supply in the wiring harness between front HO2S terminal 2D and PCM terminal 4AD
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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