July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC P0132 [13B-MSP]

DTC REFERENCE CHART

DTC P0132

A/F sensor circuit high input

DETECTION CONDITION

Detect any of the following condition:

The input voltage to the A/F sensor positive terminal is 3.589 V or more .
The input voltage to the A/F sensor negative terminal is 3.541 V or more .

Diagnostic support note

This is an intermittent monitor (A/F sensor, 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

Connector or terminal malfunction
Short to power supply in wiring harness between A/F sensor terminal A and PCM terminal 2AD
Short to power supply in wiring harness between A/F sensor terminal B and PCM terminal 2Z
A/F sensor malfunction
PCM malfunction

G05982321

Courtesy of MAZDA MOTORS CORP.

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, HO2S related) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		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, corrosion.) Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 7.
3		No	Go to the next step.
4	INSPECT A/F SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY Turn the ignition switch to the ON position (engine off.) Measure the voltage between the following circuits: A/F sensor terminal A (wiring harness-side) and body ground A/F sensor terminal B (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.
4		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, corrosion.) Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 7.
5		No	Go to the next step.
6	INSPECT A/F SENSOR Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [13B-MSP] .) Is there any malfunction?	Yes	Replace the A/F sensor, then go to the next step. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [13B-MSP] .)
6		No	Go to the next step.
7	VERIFY TROUBLESHOOTING OF DTC P0132 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. Perform the DRIVE MODE 3. (See OBD-II DRIVE MODE [13B-MSP] .) Is the PENDING CODE same as the DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [13B-MSP] .)
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [13B-MSP] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [13B-MSP] .)
8		No	DTC troubleshooting completed.