DTC P0032 [13B-MSP]
id0102g1802100
DTC P0032 |
A/F sensor heater control circuit high input |
---|---|
DETECTION CONDITION
|
• 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.
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 is available.
• The DTC is stored in the PCM memory.
|
POSSIBLE CAUSE
|
• Connector or terminal malfunction
• Short to power supply in wiring harness between A/F sensor terminal D and PCM terminal 2BG
• A/F sensor heater malfunction
• PCM malfunction
|
![]() |
Diagnostic procedure
STEP |
INSPECTION |
ACTION |
|
---|---|---|---|
1
|
VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED
• Have FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS (A/F sensor heater, HO2S heater related) been recorded?
|
Yes
|
Go to the next step.
|
No
|
Record the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
|
||
2
|
VERIFY RELATED SERVICE INFORMATION AVAILBAILITY
• Verify related Service information availability.
• Is any related Service information available?
|
Yes
|
Perform repair or diagnosis according to thavailable Service information.
• If the vehicle is not repaired, go to the next step.
|
No
|
Go to the next step.
|
||
3
|
INSPECT A/F SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the A/F sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the terminal, then go to Step 7.
|
No
|
Go to the next step.
|
||
4
|
INSPECT A/F SENSOR HEATER CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position (engine off).
• Measure the voltage between A/F sensor terminal D (wiring harness-side) and body ground.
• Is the voltage B+?
|
Yes
|
Repair or replace the wiring harness for a possible short to power supply, then go to Step 7.
|
No
|
Go to the next step.
|
||
5
|
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the terminal, then go to Step 7.
|
No
|
Go to the next step.
|
||
6
|
INSPECT A/F SENSOR HEATER
• Inspect the A/F sensor heater.
• Is there any malfunction?
|
Yes
|
Replace the A/F sensor, then go to the next step.
|
No
|
Go to the next step.
|
||
7
|
VERIFY TROUBLESHOOTING OF DTC P0032 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Perform the DRIVE MODE 03.
(See OBD DRIVE MODE [13B-MSP].)
• Is the PENDING CODE same as the DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
No
|
Go to the next step.
|
||
8
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
(See DTC TABLE [13B-MSP].)
|
No
|
DTC troubleshooting completed.
|