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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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DTC P013A:00, P013B:00 [PCM (SKYACTIV-G 2.0)]

NOTE:

  • To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

DESCRIPTION

P013A:00

  • HO2S: Slow response (during transition from rich to lean)

P013B:00

  • HO2S: Slow response (during transition from lean to rich)

DETECTION CONDITION

Determination conditions

P013A:00

  • The response speed of the HO2S input signal when the air/fuel ratio is fluctuated from rich to lean is slow.

P013B:00

  • The response speed of the HO2S input signal when the air/fuel ratio is fluctuated from lean to rich is slow.

Preconditions

  • Fuel injection control: during fuel cut*1 (P013A:00)

  • Catalytic converter estimated temperature: specified value or more

  • HO2S estimated temperature: specified value or more

  • HO2S output voltage during fuel cut: Specified value or more (P013A:00)

  • HO2S output voltage at fuel cut recovery: Specification or less (P013B:00)

  • The following DTCs are not detected:

    • HO2S heater: P0037:00, P0038:00

    • MAF sensor: P0102:00, P0103:00

    • ECT sensor No.1: P0117:00, P0118:00

    • HO2S: P0137:00, P0138:00, P0140:00

  • *1: Condition can be verified by displaying PIDs using M-MDS

Drive cycle

  • 2

Self test type

  • CMDTC self test

Sensor used

  • HO2S

FAIL-SAFE FUNCTION

  • Not applicable

VEHICLE STATUS WHEN DTCs ARE OUTPUT

  • Illuminates check engine light.

POSSIBLE CAUSE

  • HO2S malfunction

    • HO2S connector or terminals malfunction

    • HO2S loose

    • Exhaust system leakage

    • TWC damaged or malfunction

  • HO2S deterioration

  • HO2S heater malfunction

  • Improper operation of purge control system

    • Purge solenoid valve malfunction

    • Improper connection of evaporative hose (purge solenoid valve side)

  • Engine malfunction

    • Insufficient engine compression

  • PCM malfunction

System Wiring Diagram

  • Not applicable

Function Explanation (DTC Detection Outline)

    P013A:00

  • If the rate at which the HO2S output voltage is lowered is slow during fuel cut, a DTC is stored.

    P013B:00

  • If the speed at which the HO2S output voltage rises is slow during fuel cut recovery, a DTC is stored.

Repeatability Verification Procedure

  • Warm up the engine to allow the engine coolant temperature to reach 80 °C {176 °F} or more.

  • Verify that OBD-II information (such as FREEZE FRAME DATA) has been obtained and recorded.

  • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [PCM (SKYACTIV-G 2.0)].)

  • Switch the ignition off.

  • Drive the vehicle for 15 min at a speed of 40 km/h {25 mph} or more.

  • Shift to 3rd gear and rapidly accelerate the vehicle to 60 km/h {37 mph}.

  • Release the accelerator pedal and decelerate the vehicle to 40 km/h {25 mph}.

  • Repeat Step 5 to 7 operations above 5 times.

  • Try to reproduce the malfunction by driving the vehicle for 5 min based on the values in the FREEZE FRAME DATA/snapshot data.

    NOTE:

    • Match the engine coolant temperature in the recorded FREEZE FRAME DATA/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Item

Definition

Unit

Condition/Specification

O2S12

HO2S voltage

V

  • Idle (after warm up): 0—1.0 V (ECT is 91 °C {196 °F})

  • Deceleration fuel cut (accelerator pedal released from engine speed of 4,000 rpm or more): Approx. 0 V (ECT is 92 °C {198 °F})

Function Inspection Using M-MDS

STEP

INSPECTION

RESULTS

ACTION

1

 PURPOSE: 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.

No

Go to the next step.

2

 PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION

NOTE:

  • Recording can be facilitated using the screen capture function of the PC.

  • Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (A/F sensor, HO2S related) on the repair order.

—

Go to the next step.

3

 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC RELATED TO A/F SENSOR RESPONSIVENESS

Yes

Go to the next step.

No

P013A:00 is diagnosed:

  • Go to Step 6.

P013B:00 is diagnosed:

  • Go to Step 7.

4

 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC RELATED TO PURGE SOLENOID VALVE

Yes

Go to the applicable PENDING CODE or DTC inspection.

(See DTC P0443:00 [PCM (SKYACTIV-G 2.0)].)

Go to the next step.

No

Go to the next step.

5

 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC OCCURRING FROM FUEL SYSTEM RELATED PART

Yes

Go to the applicable PENDING CODE or DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

Go to the next step.

No

A factor other than the HO2S can be considered the cause of the malfunction.

  • Go to the troubleshooting procedure to perform the procedure from Step 1.

6

 PURPOSE: VERIFY FLUCTUATION OF HO2S INPUT SIGNAL AT START OF FUEL CUT

  • Start the engine and warm it up completely.

  • Access the O2S12 PID using the M-MDS.

    (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

  • Drive the vehicle under the following conditions.

    WARNING:

    • When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.

    • While performing this step, always operate the vehicle in a safe and lawful manner.

    • After increasing the engine speed to 4,000 rpm, decelerate using engine braking.

  • Can a fluctuation in the displayed PID value be verified?

Yes

Go to the troubleshooting procedure to perform the procedure from Step 10.

  • If a malfunction occurs, perform diagnosis from Step 1 of the malfunction diagnostic procedure.

No

HO2S signal can be considered the cause.

  • Go to the troubleshooting procedure to perform the procedure from Step 4.

7

 PURPOSE: VERIFY FLUCTUATION OF HO2S INPUT SIGNAL AT FUEL CUT RECOVERY

  • Start the engine and warm it up completely.

  • Access the O2S12 PID using the M-MDS.

    (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

  • Drive the vehicle under the following conditions.

    WARNING:

    • When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.

    • While performing this step, always operate the vehicle in a safe and lawful manner.

    • After increasing the engine speed to 4,000 rpm, decelerate using engine braking.

  • Stop deceleration from engine braking.

  • After stopping deceleration from engine braking, can a fluctuation in the displayed PID value be verified?

Yes

Go to the troubleshooting procedure to perform the procedure from Step 10.

  • If a malfunction occurs, perform diagnosis from Step 1 of the malfunction diagnostic procedure.

No

HO2S signal can be considered the cause.

  • Go to the troubleshooting procedure to perform the procedure from Step 4.

Troubleshooting Diagnostic Procedure

    Intention of troubleshooting procedure

  • Step 1—2

    • Perform an emission system parts inspection.

  • Step 3

    • Perform an engine inspection.

  • Step 4—9

    • Perform inspection of HO2S signal related parts.

  • Step 10—11

    • Verify that the primary malfunction is resolved and there are no other malfunctions.

STEP

INSPECTION

RESULTS

ACTION

1

 PURPOSE: DETERMINE INTEGRITY OF PURGE SOLENOID VALVE

Yes

Replace the purge solenoid valve, then go to Step 10.

(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to the next step.

2

 PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY MALFUNCTION RELATED TO POOR EVAPORATIVE HOSE CONNECTION

Yes

Go to the next step.

No

Connect evaporative hose correctly, then go to Step 10.

(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

3

 PURPOSE: VERIFY IF MALFUNCTION RELATED TO ENGINE COMPRESSION AFFECTS DIAGNOSTIC RESULTS

Yes

Go to the next step.

No

Replace or overhaul the engine, then go to Step 10.

4

 PURPOSE: INSPECT HO2S CONNECTOR CONDITION

  • Switch the ignition off.

  • Disconnect the HO2S connector.

  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

  • Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 10.

No

Go to the next step.

5

 PURPOSE: INSPECT INSTALLATION OF HO2S

  • Inspect installation of HO2S.

  • Is the HO2S installed securely?

Yes

Go to the next step.

No

Retighten the HO2S, then go to Step 10.

(See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

6

 PURPOSE: DETERMINE INTEGRITY OF HO2S

Yes

Replace the HO2S, then go to Step 10.

(See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to the next step.

7

 PURPOSE: DETERMINE INTEGRITY OF HO2S HEATER

Yes

Replace the HO2S, then go to Step 10.

(See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to the next step.

8

 PURPOSE: INSPECT EXHAUST SYSTEM FOR LEAKAGE

  • Visually inspect for exhaust gas leakage from the exhaust system.

  • Is there any malfunction?

Yes

Repair or replace the malfunctioning part according to the inspection results, then go to Step 10.

No

Go to the next step.

9

 PURPOSE: VERIFY IF CATALYTIC CONVERTER DAMAGE AFFECTS HO2S SIGNAL

  • Verify if the catalytic converter is damaged.

  • Is there any malfunction?

Yes

Repair or replace the malfunctioning part according to the inspection results, then go to the next step.

No

Replace the HO2S, then go to the next step.

(See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

10

 PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION

Yes

Repeat the inspection from Step 1 of the troubleshooting diagnostic procedure.

Go to the next step.

No

Go to the next step.

11

 PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION

  • Is any other DTC or pending code stored?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

DTC troubleshooting completed.
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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