SFI SYSTEM(for Rear Air Fuel Ratio Sensor), Diagnostic DTC:P013616, P013A7C

DTC Code DTC Name
P013616 A/F (O2) Sensor Circuit Bank 1 Sensor 2 Circuit Current (Voltage) Below Threshold
P013A7C A/F Sensor - Rich to Lean Bank 1 Sensor 2 Slow Response

DESCRIPTION

Tech Tips

DTC P013A7C is applicable to w/ Canister Pump Module only.

Refer to DTC P003612.

Click here

Tech Tips

Although the DTC title say oxygen sensor, this DTC relate to the air fuel ratio sensor (sensor 2).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P013616 A/F (O2) Sensor Circuit Bank 1 Sensor 2 Circuit Current (Voltage) Below Threshold

Either of the following conditions is met (2 trip detection logic).


  • During active rich air-fuel ratio control, the air fuel ratio sensor (sensor 2) current is 6 mA or more

  • During active rich air-fuel ratio control, the oxygen storage capacity of the catalyst is more than 2.0 g when the air fuel ratio sensor (sensor 2) current is -0.25757 mA or higher

  • Air fuel ratio sensor (sensor 2)

  • Air fuel ratio sensor (sensor 1)

  • Gas leak from exhaust system

  • Fuel system

  • Intake system

 Comes on DTC stored SAE Code: P0136
P013A7C A/F Sensor - Rich to Lean Bank 1 Sensor 2 Slow Response During a fuel cut, the amount of time it takes for the current of the air fuel ratio sensor (sensor 2) to increase to a certain amount is equal to or greater than the threshold (1 trip detection logic).

  • Air fuel ratio sensor (sensor 2)

  • Gas leak from exhaust system

 Comes on DTC stored SAE Code: P013A

MONITOR DESCRIPTION


  1. Active Air fuel Ratio Control

    The ECM usually performs air fuel ratio feedback control so that the air fuel ratio sensors output indicates a near stoichiometric air fuel ratio. This vehicle includes active air fuel ratio control in addition to regular air fuel ratio control. The ECM performs active air fuel ratio control to detect any deterioration in the Three-Way Catalytic Converter (TWC) and any malfunctions of the air fuel ratio sensor (sensor 2) (refer to the diagram below).

    Active air fuel ratio control is performed for approximately 30 seconds while driving with a warm engine. During active air fuel ratio control, the air fuel ratio is forcibly regulated to become lean or rich by the ECM. If the ECM detects a malfunction, a DTC is stored.

  2. Abnormal Air Fuel Ratio Sensor (Sensor 2) Output Current (DTC P013616)

    Case 1: The ECM illuminates the MIL and stores a DTC when active rich air-fuel ratio control is being performed and the air fuel ratio sensor (sensor 2) current is 6 mA or more.

    Case 2: The ECM illuminates the MIL and stores a DTC when active rich air-fuel ratio control is being performed, the oxygen storage capacity of the catalyst is more than 2.0 g and the air fuel ratio sensor (sensor 2) current is -0.25757 mA or more.

    B007YHWE02

  3. Abnormal Air Fuel Ratio Sensor (Sensor 2) Output Current During Fuel-cut from Rich Condition (DTC P013A7C)

    During a fuel cut, if the amount of time it takes for the current of the air fuel ratio sensor (sensor 2) to increase to a certain amount is equal to or greater than the threshold, the responsiveness of the air fuel ratio sensor (sensor 2) is judged as degraded, the ECM illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Required Sensors/Components (Main) Air fuel ratio sensor (sensor 2)
Required Sensors/Components (Related)

Crankshaft position sensor

Engine coolant temperature sensor

Mass air flow meter sub-assembly

Throttle position sensor

Air fuel ratio sensor (sensor 1)
Frequency of Operation

P013616: Once per driving cycle

P013A7C: Continuous

TYPICAL ENABLING CONDITIONS

P013616: Air Fuel Ratio Sensor (Sensor 2) Output Current Malfunction
Battery voltage 11 V or higher
Intake air temperature -10°C (14°F) or higher
Engine coolant temperature 75°C (167°F) or higher
Atmospheric pressure 76 kPa(abs) [11.02 psi(abs)] or higher
Idling Off
Engine speed Less than 3200 rpm
Air fuel ratio sensor (sensor 1) status Activated
Fuel system status Closed loop
Engine load 10% or higher, and less than 140%
P013A7C: Air Fuel Ratio Sensor (Sensor 2) Response Rate During Fuel Cut from Rich Condition
Battery voltage 11 V or higher
Engine coolant temperature 75°C (167°F) or higher
Catalyst temperature 500°C (932°F) or higher
Fuel cut On

TYPICAL MALFUNCTION THRESHOLDS

P013616: Air Fuel Ratio Sensor (Sensor 2) Output Current Malfunction
Both of the following conditions are met A and B
A. Continuous time of active rich air fuel ratio control*1 0.5 seconds or more
*1: Target air fuel ratio 13.7 or less
B. Either of the following conditions is met (a) or (b)
(a) Air fuel ratio sensor (sensor 2) current 6 mA or more
(b) OSC (Oxygen Storage Capacity) of catalyst More than 2.0 g
P013A7C: Air Fuel Ratio Sensor (Sensor 2) Response Rate during Fuel Cut from Rich Condition
The amount of time it takes for the current of the air fuel ratio sensor (sensor 2) to increase to a certain amount during a fuel cut (Normalized) 1 or more

CONFIRMATION DRIVING PATTERN

Tech Tips


  • This confirmation driving pattern is used for the "Perform Confirmation Driving Pattern" procedure of the following diagnostic troubleshooting procedure.

  • Performing this confirmation driving pattern will activate the air fuel ratio sensor (sensor 2) monitor (the catalyst monitor is performed simultaneously). This is very useful for verifying the completion of a repair.


B007ZBDE62

  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the engine switch off and wait for at least 30 seconds.

  6. Turn the engine switch on (IG) [A].

  7. Turn the GTS on.

  8. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with the shift lever in P [B].

  9. Drive the vehicle at 75 to 120 km/h (46 to 75 mph) for 10 minutes or more [C].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  10. Enter the following menus: Powertrain / Engine / Trouble Codes [D].

  11. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  13. Input the DTC: P013616.

  14. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    Tech Tips


    • If the judgment result is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE, perform steps [C] through [D] again.


B007WYWE05

  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the engine switch off and wait for at least 30 seconds.

  6. Turn the engine switch on (IG).

  7. Turn the GTS on.

  8. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with the shift lever in P [A].

    Tech Tips

    In order to keep the idle stable, turn off the A/C and all other electric loads and do not perform any shift operations.

  9. Drive the vehicle at approximately 75 km/h (46 mph) for 10 minutes or more [B].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    Tech Tips

    Drive the vehicle while keeping the engine load as constant as possible.

  10. With the shift lever in M, drive the vehicle at 75 km/h (46 mph), and then decelerate the vehicle by releasing the accelerator pedal for 5 seconds or more to perform the fuel-cut [C].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  11. Repeat step [C] 2 times or more in one driving cycle.

  12. Enter the following menus: Powertrain / Engine / Trouble Codes / [D].

  13. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  14. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  15. Input the DTC: P013A7C.

  16. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    Tech Tips


    • If the judgment result is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE, drive the vehicle with the shift lever in M, and then perform step [C] again.

WIRING DIAGRAM

Refer to DTC P003612.

Click here

CAUTION / NOTICE / HINT

Tech Tips

Malfunctioning areas can be identified by performing the Active Test "Control the Injection Volume for A/F Sensor". This Active Test can help to determine whether the air fuel ratio sensors (sensor 1 and sensor 2) and other potential trouble areas are malfunctioning.

The following procedure describes how to perform the Active Test "Control the Injection Volume for A/F Sensor" using the GTS.


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

  5. Warm up the air fuel ratio sensors at an engine speed of 2500 rpm for 90 seconds.

  6. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / A/F (O2) Sensor Voltage B1S1 and A/F (O2) Sensor Current B1S2.

  7. Perform the Active Test with the engine idling (change the fuel injection volume).

  8. Monitor the output values of the air fuel ratio sensor (sensor 1) (A/F (O2) Sensor Voltage B1S1) and air fuel ratio sensor (sensor 2) (A/F (O2) Sensor Current B1S2) displayed on the GTS.

Tech Tips


  • The Active Test "Control the Injection Volume for A/F Sensor" can be used to lower the fuel injection volume by 12.5% or increase the injection volume by 12.5%.

  • Each sensor reacts in accordance with the increase and decrease in the fuel injection volume.

Standard
GTS Display (Sensor) Injection Volume Status Value

A/F (O2) Sensor Voltage B1S1

(Air fuel ratio sensor (sensor 1))

 12.5% Rich Below 3.1 V
-12.5% Lean Higher than 3.4 V

A/F (O2) Sensor Current B1S2

(Air fuel ratio sensor (sensor 2))

 12.5% Rich Below -0.86 mA
-12.5% Lean More than 0.33 mA

Note

The air fuel ratio sensor (sensor 1) has an output delay of a few seconds and the air fuel ratio sensor (sensor 2) has a maximum output delay of approximately 20 seconds.

B007Z1DE07

Performing the Active Test "Control the Injection Volume for A/F Sensor" allows the output value of the air fuel ratio sensors (sensor 1 and sensor 2) to be checked and graphed.

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

Tech Tips


  • Sensor 1 refers to the sensor closest to the engine assembly.

  • Sensor 2 refers to the sensor farthest away from the engine assembly.

  • Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P013616 AND P013A7C)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P013616 is output A
      DTC P013A7C is output B
      DTC P013616 or P013A7C and other DTCs are output C

      Tech Tips

      If any DTCs other than P013616 or P013A7C are output, troubleshoot those DTCs first.


    B

    CHECK FOR EXHAUST GAS LEAK Click here

    C

    GO TO DTC CHART Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

    5. Warm up the air fuel ratio sensors at an engine speed of 2500 rpm for 90 seconds.

    6. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / Coolant Temperature, A/F (O2) Sensor Voltage B1S1 and A/F (O2) Sensor Current B1S2.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Volume for A/F Sensor
      Data List Display
      Coolant Temperature
      A/F (O2) Sensor Voltage B1S1
      A/F (O2) Sensor Current B1S2

    7. Perform the Control the Injection Volume for A/F Sensor operation with the engine idling.

    8. Monitor the output values of the air fuel ratio sensors (A/F (O2) Sensor Voltage B1S1 and A/F (O2) Sensor Current B1S2) displayed on the GTS.

      Tech Tips


      • The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 12.5%.

      • The air fuel ratio sensor (sensor 1) has an output delay of a few seconds and the air fuel ratio sensor (sensor 2) has a maximum output delay of approximately 20 seconds.

      • If the sensor output value does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

      Standard
      GTS Display (Sensor) Injection Volume Status Value

      A/F (O2) Sensor Voltage B1S1

      (Air fuel ratio sensor (sensor 1))

      		 12.5% Rich Below 3.1 V
      -12.5% Lean Higher than 3.4 V

      A/F (O2) Sensor Current B1S2

      (Air fuel ratio sensor (sensor 2))

      		 12.5% Rich Below -0.86 mA
      -12.5% Lean More than 0.33 mA
      Result
      Status of A/F (O2) Sensor Voltage B1S1 Status of A/F (O2) Sensor Current B1S2 Suspected Trouble Area Proceed to
      Lean/Rich Lean/Rich Air fuel ratio sensor (sensor 2) A
      Lean Lean

      • Gas leak from exhaust system

      • Extremely lean actual air fuel ratio

      • Air fuel ratio sensor (sensor 2)

      		 B
      Rich Rich

      • Gas leak from exhaust system

      • Extremely rich actual air fuel ratio

      • Air fuel ratio sensor (sensor 2)
      Lean/Rich Lean

      • Air fuel ratio sensor (sensor 2)

      • Gas leak from exhaust system

      		 C
      Lean/Rich Rich

      • Air fuel ratio sensor (sensor 2)

      • Gas leak from exhaust system
      Lean Lean/Rich

      • Air fuel ratio sensor (sensor 1)

      • Air fuel ratio sensor (sensor 2)

      		 D
      Rich Lean/Rich

      • Air fuel ratio sensor (sensor 1)

      • Air fuel ratio sensor (sensor 2)

      • Lean: During the Control the Injection Volume for A/F Sensor Active Test, the air fuel ratio sensor (sensor 1) output voltage (A/F (O2) Sensor Voltage B1S1) is consistently higher than 3.4 V, and the air fuel ratio sensor (sensor 2) output current (A/F (O2) Sensor Current B1S2) is consistently more than 0.33 mA.

      • Rich: During the Control the Injection Volume for A/F Sensor Active Test, the air fuel ratio sensor (sensor 1) output voltage (A/F (O2) Sensor Voltage B1S1) is consistently below 3.1 V, and the air fuel ratio sensor (sensor 2) output current (A/F (O2) Sensor Current B1S2) is consistently below -0.86 mA.

      • Lean/Rich: During the Control the Injection Volume for A/F Sensor Active Test, the output value of the air fuel ratio sensor (sensor 1) or air fuel ratio sensor (sensor 2) alternate correctly.

      Tech Tips

      Refer to "Data List / Active Test" [A/F (O2) Sensor Voltage B1S1, A/F (O2) Sensor Current B1S2].

      Click here


    B

    CHECK FOR EXHAUST GAS LEAK Click here

    C

    CHECK FOR EXHAUST GAS LEAK Click here

    D

    REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) Click here

    A

  3. REPLACE AIR FUEL RATIO SENSOR (SENSOR 2)


    1. Replace the air fuel ratio sensor (sensor 2).

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 2).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

      Result
      Proceed to
      NEXT

    NEXT

  5. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    2. Enter the following menus: Powertrain / Engine / Utility / All Readiness.


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    3. Input the DTC: P013616.

    4. Check the DTC judgment result.

      Result
      GTS Display Description
      NORMAL

      • DTC judgment completed

      • System normal
      ABNORMAL

      • DTC judgment completed

      • System abnormal
      INCOMPLETE

      • DTC judgment not completed

      • Perform driving pattern after confirming DTC enabling conditions
      Result
      Proceed to
      NEXT

    NEXT

    END

  6. CHECK FOR EXHAUST GAS LEAK


    1. Check for exhaust gas leaks.

      OK
      No gas leaks in exhaust system.

      Tech Tips

      Perform "Inspection After Repair" after repairing or replacing the exhaust system.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE EXHAUST SYSTEM

    OK

  7. CHECK CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO


    1. Check the cause of extremely rich or lean actual air fuel ratio, referring to the DTC P017100 and P017200 Inspection Procedure.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 10 Click here

  8. CHECK FOR EXHAUST GAS LEAK


    1. Check for exhaust gas leaks.

      OK
      No gas leaks in exhaust system.

      Tech Tips


      • Perform "Inspection After Repair" after repairing or replacing the exhaust system.

        Click here

      • Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 2).

        Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR FUEL RATIO SENSOR (SENSOR 2) Click here

    NG

    REPAIR OR REPLACE EXHAUST SYSTEM

  9. REPLACE AIR FUEL RATIO SENSOR (SENSOR 1)


    1. Replace the air fuel ratio sensor (sensor 1).

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

      Result
      Proceed to
      NEXT

    NEXT

  11. CHECK WHETHER DTC OUTPUT RECURS (DTC P013616)


    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    2. Enter the following menus: Powertrain / Engine / Utility / All Readiness.


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    3. Input the DTC: P013616.

    4. Check that the DTC judgment result is NORMAL. If the DTC judgment result is INCOMPLETE, perform the confirmation drive pattern again but increase the vehicle speed.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P013616 is output)

      		 B

      Tech Tips

      Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 2).

      Click here


    A

    END

    B

    REPLACE AIR FUEL RATIO SENSOR (SENSOR 2) Click here

  12. CHECK FOR EXHAUST GAS LEAK


    1. Check for exhaust gas leaks.

      OK
      No gas leaks in exhaust system.

      Tech Tips

      Perform "Inspection After Repair" after repairing or replacing the exhaust system.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE EXHAUST SYSTEM

    OK

  13. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

      Result
      Proceed to
      NEXT

    NEXT

  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P013A7C)


    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    2. Enter the following menus: Powertrain / Engine / Utility / All Readiness.


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    3. Input the DTC: P013A7C.

    4. Check that the DTC judgment result is NORMAL. If the DTC judgment result is INCOMPLETE, perform the confirmation drive pattern again but increase the vehicle speed.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P013A7C is output)

      		 B

      Tech Tips

      Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 2).

      Click here


    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

    REPLACE AIR FUEL RATIO SENSOR (SENSOR 2) Click here