Dtc P0032 [13B-Msp] - Mazda RX-8 Workshop Manual

< Previous Next >
2011 - RX-8 - Engine

DTC P0032 [13B-MSP]

DTC P0032 A/F sensor heater control circuit high input
DETECTION
CONDITION
POSSIBLE
CAUSE
The input voltage to the A/F sensor heater drive terminal in the PCM is at the set value or
more for 1 s or more even though the A/F sensor heater is duty-controlled at 10% or more
by the PCM.
If the current flowing to the A/F sensor heater circuit in the PCM is high when the A/F sensor
heater is off, the PCM detects DTC P0032.
Diagnostic support note
This is a continuous monitor (A/F sensor heater, 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 (Mode 2/Mode 12) is available.
The DTC is stored in the PCM memory.
A/F sensor connector or terminals malfunction
A/F sensor heater malfunction
PCM connector or terminals malfunction
Short to power supply in wiring harness between A/F sensor terminal D and PCM terminal 2BG
PCM malfunction