Diagnostic procedure

DTC P0133 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED Have the 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 the 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 AND STORED DTC Turn the ignition switch off, then to the ON position (Engine off). Verify the pending or stored DTCs using the WDS or equivalent. Is DTC P0443 also present?	Yes	Go to DTC P0443 troubleshooting procedures, then go to Step 14.
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 troubleshooting procedures for DTC on FREEZE FRAME DATA. (See DTC TABLE ).
5	VERIFY CURRENT INPUT SIGNAL STATUS Warm up the engine. Access the O2S11 PID using the WDS or equivalent. Inspect the PID under the following accelerator pedal conditions in NEUTRAL. Is the PID normal? Less than 1 mA when the accelerator pedal is suddenly depressed (rich condition). More than 1 mA just after accelerator pedal is released (lean condition).	Yes	Go to Step 8.
5		No	Go to the next step.
6	INSPECT INSTALLATION OF FRONT HO2S Inspect if the front HO2S is loosely installed. Is the front HO2S installed securely?	Yes	Go to the next step.
6		No	Retighten the front HO2S, then go to Step 14.
7	INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM Visually inspect if any gas leakage is found between the exhaust manifold and front HO2S. Is there gas leakage?	Yes	Repair or replace the malfunctioning exhaust part, then go to Step 14.
7		No	Replace sensor, then go to Step 14.
8	INSPECT FUEL PRESSURE (HIGH-SIDE) Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See USING THE WDS OR EQUIVALENT ).	Yes	Go to Step 13.
8		No	Go to the next step.
9	IDENTIFY CAUSE BY FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle accelerate performance normally?	Yes	Go to the next step.
9		No	Go to Step 11.
10	INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION ). Is the fuel pressure sensor normal?	Yes	Go to the next step.
10		No	Replace the fuel delivery pipe, then go to Step 14.
11	INSPECT HIGH PRESSURE FUEL PUMP Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See USING THE WDS OR EQUIVALENT ).	Yes	Retest Step 14.
11		No	Go to the next step.
12	INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION ). Is the low side fuel pressure within the specification?	Yes	Go to the next step.
12		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal replace the fuel pump. Then go to Step 14.
13	INSPECT SEALING OF ENGINE COOLANT PASSAGE Perform the "ENGINE COOLANT LEAKAGE INSPECTION". (See ENGINE COOLANT LEAKAGE INSPECTION ). Is there any malfunction?	Yes	Go to the next step.
13		No	Repair or replace the malfunctioning part according to the inspection results. Then go to the next step.
14	VERIFY TROUBLESHOOTING OF DTC P0133 COMPLETED Make sure to reconnect all disconnected connectors. Turn the ignition switch to the ON position. (Engine off) Clear the DTC from the memory using the WDS or equivalent. Perform the HO2S heater, HO2S, and TWC Repair Verification Drive Mode. (See OBD-II DRIVE MODE ). Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
14		No	Go to the next step.
15	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE ). Are any DTCs present?	Yes	Go to the applicable DTC troubleshooting. (See DTC TABLE ).
15		No	Troubleshooting completed.