Diagnostic procedure

DTC P0133 DIAGNOSTIC PROCEDURE CHART

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 (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	VERIFY RELATED PENDING CODE OR STORED DTC Turn the ignition switch off, then to the ON position (Engine off). Verify the related PENDING CODE or stored DTCs. Is the DTC P0443 also present?	Yes	Go to the DTC P0443 inspection. (See DTC P0443 ).
3		No	Go to the next step.
4	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA Is DTC P0133 on FREEZE FRAME DATA?	Yes	Go to the next step.
4		No	Go to the FREEZE FRAME DATA DTC inspection. (See DTC TABLE ).
5	INSPECT INSTALLATION OF FRONT HO2S Inspect the front HO2S for looseness. Is it normal?	Yes	Go to the next step.
5		No	Tighten the front HO2S, then go to Step 16. (See FRONT HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION )
6	INSPECT EXHAUST SYSTEM FOR EXHAUST GAS LEAKAGE Visually inspect exhaust gas leakage in the exhaust system. Is there exhaust gas leakage?	Yes	Repair or replace the malfunctioning part, then go to Step 10.
6		No	Go to the next step.
7	INSPECT FRONT HO2S Inspect the front HO2S. (See FRONT HEATED OXYGEN SENSOR (HO2S) INSPECTION .) Is there any malfunction?	Yes	Replace the front HO2S, then go to Step 10. (See FRONT HEATED OXYGEN SENSOR (HO2S) INSPECTION .)
7		No	Go to the next step.
8	INSPECT FUEL LINE PRESSURE Turn the ignition switch off. Inspect the fuel line pressure while the engine is still running. (See FUEL LINE PRESSURE INSPECTION .) Is the fuel line pressure normal?	Yes	Go to the next step.
8		No	Go to step 12.
9	INSPECT AIR SYSTEM OPERATION Perform the "AIR System Inspection". (See ENGINE CONTROL SYSTEM OPERATION INSPECTION .) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results. Then go to Step 13.
9		No	Go to the next step.
10	INSPECT TP SENSOR Inspect the TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION ) Is there any malfunction?	Yes	Replace the throttle body, then go to Step 16. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION )
10		No	Go to the next step.
11	INSPECT ECCENTRIC SHAFT POSITION SENSOR Inspect the eccentric shaft position sensor. (See ECCENTRIC SHAFT POSITION SENSOR INSPECTION ) Is there any malfunction?	Yes	Replace the eccentric shaft position sensor, then go to the next step. (See ECCENTRIC SHAFT POSITION SENSOR REMOVAL/INSTALLATION )
11		No	Go to the next step.
12	INSPECT SEALING OF ENGINE COOLANT PASSAGE Perform the ENGINE COOLANT LEAKAGE INSPECTION . Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results. Then go to the next step.
12		No	Go to the next step.
13	VERIFY TROUBLESHOOTING OF DTC P0133 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS or equivalent. Perform the DRIVE MODE 1 and 3. (See OBD-II DRIVE MODE ). Is the PENDING CODE same as the DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION )
13		No	Go to the next step.
14	VERIFY AFTER REPAIR PROCEDURE Perform the AFTER REPAIR PROCEDURE . Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
14		No	DTC troubleshooting completed.