DTC P0133:00 [L5]SM2444212
DTC P0133:00 [L5]

id0102c9702400

DTC P0133:00

A/F sensor circuit slow response
DETECTION CONDITION
• The PCM monitors the A/F sensor terminal 1B current slow response and delayed response while the A/F fluctuation being provided when following monitoring conditions are met. If the average value of slow response and/or delayed response is more than specified value, the PCM determine that the A/F sensor has a deterioration.
MONITORING CONDITIONS
― Drive Mode 03 (EGR System, A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode)
― Following conditions are met:
• A/F sensor heater monitor is completed.
• Fuel system loop status is closed loop fuel control.
― ECT sensor and A/F sensor heater are normal
― Engine speed: 1,200—3,500 rpm
― Charging efficiency: 16—63%
― Intake airflow amount: 5—40 g/s {0.7—5.2 lb/min}
― Engine coolant temperature: above 60 °C {140 °F}
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 first drive cycle.
• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
• The DTC is stored in the PCM memory.
POSSIBLE CAUSE
• A/F sensor malfunction
― Connector or terminals malfunction
― Leakage exhaust system
• Fuel supply system malfunction or improper fuel line pressure
― Fuel leakage in fuel line from fuel distributor to fuel pump
― Clogged or restricted fuel filter
― Pressure regulator malfunction
― Fuel pump unit malfunction
• Purge solenoid valve malfunction
• Engine malfunction
― Leakage engine coolant
― Insufficient engine compression
• A/F sensor malfunction
― A/F sensor deterioration
― Related wiring harness malfunction
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2)
• Perform the Freeze Frame PID Data Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [L5].)
• 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 [L5].)
2
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED
• Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (A/F sensor, HO2S related) been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
3
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.
4
VERIFY RELATED PENDING CODE AND/OR DTC
• Turn the ignition switch off, then to the ON position (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [L5].)
• Is the PENDING CODE/DTC P0443:00 also present?
Yes
Go to the applicable PENDING CODE or DTC inspection.
(See DTC P0443:00 [L5].)
No
Go to the next step.
5
INSPECT A/F SENSOR CONNECTOR CONDITION
• 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 connector and/or terminals, then go to Step 14.
No
Go to the next step.
6
INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM
• Visually inspect if there is any gas leakage between the exhaust manifold and A/F sensor.
• Is there gas leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 14.
No
Go to the next step.
7
INSPECT FUEL LINE PRESSURE
• Turn the ignition switch off.
Note
• If the engine will not start, inspect the fuel line pressure with the ignition switch turn to the ON position.
• Inspect the fuel line pressure while the engine running. (See FUEL LINE PRESSURE INSPECTION [L5].)
• Is there any malfunction?
Yes
Go to the next step.
No
Go to Step 10.
8
INSPECT FUEL LINE LEAKAGE
• Visually inspect the leakage from fuel line between fuel distributor to fuel pump.
• Is there any leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 14.
No
Go to the next step.
9
INSPECT FUEL FILTER
• Visually inspect the foreign materials or stain inside fuel filter.
• Is there any foreign materials or stain?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 14.
No
Replace the fuel pump unit, then go to Step 14.
(See FUEL PUMP UNIT REMOVAL/INSTALLATION [L5].)
10
INSPECT PURGE SOLENOID VALVE
• Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION [L5].)
• Is there any malfunction?
Yes
Replace the purge solenoid valve, then go to Step 14.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [L5].)
No
Go to the next step.
11
INSPECT SEALING OF ENGINE COOLANT PASSAGE
• Perform the “ENGINE COOLANT LEAKAGE INSPECTION”. (See ENGINE COOLANT LEAKAGE INSPECTION [L5].)
• Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 14.
No
Go to the next step.
12
INSPECT ENGINE COMPRESSION
• Inspect the engine compression. (See COMPRESSION INSPECTION [L5].)
• Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 14.
No
Go to the next step.
13
INSPECT A/F SENSOR
• Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [L5].)
• 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 [L5].)
No
Inspect the related wiring harness.
• If there is a malfunction:
― Repair or replace the suspected wiring harness, then go to the next step.
• If there is no malfunction:
― Go to the next step.
14
VERIFY DTC TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L5].)
• Drive the vehicle under the monitoring conditions.
• Perform the Drive Mode 03 (EGR System, A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode). (See OBD DRIVE MODE [L5].)
• Is the PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [L5].)
No
Go to the next step.
15
VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L5].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [L5].)
No
DTC troubleshooting completed.