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DTC P0133 [L3 Turbo]

id0102b7804800

DTC P0133 | A/F sensor circuit slow response
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DETECTION CONDITION | • An A/F sensor malfunction can be detected by measuring the average frequency of the A/F sensor signal, time required to pass from rich to lean, and the time required to pass from lean to rich. • The average frequency of the A/F sensor signal is more than the threshold value. MONITORING CONDITIONS - A/F sensor heater, HO2S heater, A/F sensor, HO2S, and TWC Repair Verification Drive Mode - The following conditions are met: • A/F sensor heater monitor is completed. • ECT sensor and A/F sensor heater are normal. • Engine speed: 1,750-3,500 rpm • Charging efficiency: 35-63% (at engine speed of 2500 rpm) • Fuel system loop status is closed loop fuel control. • Engine coolant temperature above 70 °C {158 °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. • DIAGNOSTIC MONITORING TEST RESULTS is available. • PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA is available. • DTCs are stored in the PCM memory.
POSSIBLE CAUSE | • A/F sensor deterioration • A/F sensor malfunction • A/F sensor looseness • Fuel pressure sensor malfunction • Clogged or restricted fuel line • Fuel leakage in the fuel line between the fuel delivery pipe and the fuel pump • Exhaust system leakage • Purge solenoid valve malfunction • Improper connection purge solenoid hose • Insufficient compression • Engine malfunction (Engine coolant leakage)

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR 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.
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.
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.
No | Go to troubleshooting procedures for DTC on FREEZE FRAME DATA. (See DTC TABLE [L3 Turbo].)
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 1mA when the accelerator pedal is suddenly depressed (rich condition). - More than 1mA just after accelerator pedal is released (lean condition). | Yes | Go to Step 8.
No | Go to the next step.
6 | INSPECT INSTALLATION OF A/F SENSOR • Inspect if the A/F sensor is loosely installed. • Is the A/F sensor installed securely? | Yes | Go to the next step.
No | Retighten the A/F sensor, 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 A/F sensor. • Is there gas leakage? | Yes | Repair or replace the malfunctioning exhaust part, then go to Step 14.
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.
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.
No | Go to Step 11.
10 | INSPECT FUEL PRESSURE SENSOR • Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 Turbo].) • Is the fuel pressure sensor normal? | Yes | Go to the next step.
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.
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. (SeeFUEL LINE PRESSURE INSPECTION [L3 Turbo].) • Is the low side fuel pressure within the specification? | Yes | Go to the next step.
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 [L8, LF, L3, L3 Turbo].) • Is there any malfunction? | Yes | Go to the next step.
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 A/F sensor heater, HO2S heater, A/F sensor, HO2S, and TWC Repair Verification Drive Mode. (See OBD DRIVE MODE [L3 Turbo].) • Is the PENDING CODE for this DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)
No | Go to the next step.
15 | VERIFY AFTER REPAIR PROCEDURE • Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present? | Yes | Go to the applicable DTC troubleshooting. (See DTC TABLE [L3 Turbo].)
No | Troubleshooting completed.