DTC P0133:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5]

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

Details On DTCs

DESCRIPTION

A/F sensor circuit slow response
DETECTION CONDITION
Determination conditions
•  The response speed of the A/F sensor input signal when the air/fuel ratio is fluctuated is slow.
Preconditions
•  Engine speed: Within specified range
•  Charging efficiency: Within specified range
•  Engine coolant temperature: Specified value or more
•  Mass airflow: Within specified range
•  The following DTCs are not detected:
―  A/F sensor heater: P0031:00, P0032:00
―  ECT sensor: P0117:00, P0118:00
―  VSS signal: P0500:00
―  Misfire: P0300:00, P0301:00, P0302:00, P0303:00, P0304:00
―  Fuel injection correction: P0171:00, P0172:00, P2096:00, P2097:00
Drive cycle
•  2
Self test type
•  CMDTC self test
Sensor used
•  A/F sensor
FAIL-SAFE FUNCTION
•  Fixes duty value of A/F sensor heater
•  Stops fuel feedback control of A/F sensor
VEHICLE STATUS WHEN DTCs ARE OUTPUT
•  Illuminates check engine light.
POSSIBLE CAUSE
•  A/F sensor signal malfunction
―  A/F sensor connector or terminals malfunction
―  A/F sensor loose
―  Exhaust system leakage
•  A/F sensor deterioration
•  A/F sensor heater malfunction
•  PCM malfunction


System Wiring Diagram

•  Not applicable

Function Explanation (DTC Detection Outline)

•  The PCM detects the oxygen concentration in the exhaust gas based on the A/F sensor signal. By intentionally increasing/decreasing the fuel injection amount, the PCM controls the oxygen concentration in the exhaust gas to rich or lean and monitors the response speed of the A/F sensor to sudden changes in the oxygen concentration. If the response speed of the signal input from the A/F sensor is slow while switching repeatedly between rich and lean, the PCM determines an A/F sensor malfunction and stores a DTC.
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Repeatability Verification Procedure

1.  Warm up the engine to allow the engine coolant temperature to reach 80 °C {176 °F} or more.
2.  Start the engine and leave it idling for 1 min.
3.  Shift to 3rd gear and drive the vehicle for 10 min at an engine speed of 1,500 rpm or more and a vehicle speed of 50 km/h {31 mph} or more.
Note
•  Match the engine coolant temperature in the recorded FREEZE FRAME DATA (Mode 2)/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.
4.  Try to reproduce the malfunction by driving the vehicle for 5 min based on the values in the FREEZE FRAME DATA (Mode 2)/snapshot data.

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Item

Definition

Unit

Condition/Specification
HTR11
A/F sensor heater operation status
Off/On
•  Ignition switched ON (engine off): Off
•  Idle (after warm up): On
A/F sensor heater control duty value
%
•  Ignition switched ON (engine off): 0%
•  Idle (after warm up): Approx. 40%
O2S11
A/F sensor current
µA
•  Idle (after warm up): Approx. −39 µA
•  Deceleration fuel cut (accelerator pedal released from engine speed of 4,000 rpm or more): Approx. 3.84 mA


Function Inspection Using M-MDS

STEP

INSPECTION

RESULTS

ACTION
1
PURPOSE: VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2)
•  Is the DTC P0133:00 on FREEZE FRAME DATA (Mode 2)?
Yes
Go to the next step.
No
Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2).
(See DTC TABLE [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
3
PURPOSE: RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
•  Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
Note
•  Recording can be facilitated using the screen capture function of the PC.
4
PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY DTC OCCURRING FROM A/F SENSOR UNIT
•  Switch the ignition off, then ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the PENDING CODE/DTC P0131:00, P0132:00, P0134:00, P2237:00, P2243:00 or P2251:00 also present?
Yes
Go to the applicable DTC inspection.
(See DTC P0131:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
(See DTC P0132:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
(See DTC P0134:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
(See DTC P2237:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
(See DTC P2243:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
(See DTC P2251:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
Go to the next step.
No
Go to the next step.
5
PURPOSE: VERIFY A/F SENSOR
•  Start the engine and idle it.
•  Access the O2S11 PID using the M-MDS.
•  Is the O2S11 PID value normal?
Yes
Go to the next step.
No
Go to the troubleshooting procedure to perform the procedure from Step 1.
6
PURPOSE: VERIFY A/F SENSOR HEATER
•  Start the engine and idle it.
•  Access the HTR11 PID using the M-MDS.
•  Is the HTR11 PID value normal?
Yes
Go to the next step.
No
Go to the troubleshooting procedure to perform the procedure from Step 5.
7
PURPOSE: VERIFY DTC
•  Switch the ignition off, then ON (engine off).
•  Retrieve the PCM DTCs using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
Go to the troubleshooting procedure to perform the procedure from Step 1.
No
Go to the troubleshooting procedure to perform the procedure from Step 1.


Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure
•  Step 1—5
―  Perform inspection of A/F sensor signal related parts.
•  Step 6
―  Verify that the primary malfunction is resolved and there are no other malfunctions.

STEP

INSPECTION

RESULTS

ACTION
1
PURPOSE: INSPECT A/F SENSOR CONNECTOR CONDITION
•  Switch the ignition 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 connector and/or terminals, then go to Step 6.
No
Go to the next step.
2
PURPOSE: INSPECT INSTALLATION OF A/F SENSOR
•  Inspect installation of A/F sensor.
•  Is the A/F sensor installed securely?
Yes
Go to the next step.
No
Retighten the A/F sensor, then go to Step 6.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
3
PURPOSE: VERIFY IF MALFUNCTION RELATED TO EMISSION SYSTEM AFFECTS A/F SENSOR SIGNAL
•  Inspect for exhaust gas leakage from the exhaust system. (between A/F sensor and HO2S)
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 6.
No
Go to the next step.
4
PURPOSE: DETERMINE INTEGRITY OF A/F SENSOR
•  Reconnect all disconnected connectors.
•  Inspect the A/F sensor.
•  Is there any malfunction?
Yes
Replace the A/F sensor, then go to Step 6.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
No
Go to the next step.
5
PURPOSE: DETERMINE INTEGRITY OF 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.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
No
Go to the next step.
6
PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Implement the repeatability verification procedure.
•  Perform the Pending Trouble Code Access Procedure.
•  Is the PENDING CODE for this DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
DTC troubleshooting completed.