DTC P0133:00 [MZR-CD 2.2]
id0102f3702400
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DTC P0133:00 |
A/F sensor circuit malfunction |
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DETECTION CONDITION
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• The PCM monitors the A/F sensor impedance when the following conditions are met. If the impedance is more than threshold, the PCM determines that A/F sensor is not activated.
MONITORING CONDITIONS
Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunction condition in first drive cycle.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
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POSSIBLE CAUSE
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• A/F sensor malfunction
• Exhaust system leakage
• Engine coolant leakage
• Pressure regulator (built-in supply pump unit) malfunction
• Supply pump malfunction
• Clogged or restricted fuel filter (built-in supply pump unit)
• Fuel leakage in fuel line between fuel distribution pipe and supply pump
• PCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA on the repair order, then go to the next step.
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2
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform the repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE2)
• Is DTC P0133:00 on FREEZE FRAME DATA (mode2)?
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Yes
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Go to the next step.
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No
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Go to troubleshooting procedures for DTC on FREEZE FRAME DATA (mode2).
(See DTC TABLE [MZR-CD 2.2].)
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4
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INSPECT A/F SENSOR
• Inspect A/F sensor.
• Is there any malfunction?
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Yes
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Go to the next step.
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No
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Go to Step 7.
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5
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INSPECT INSTALLATION OF A/F SENSOR
• Inspect if the A/F sensor is loosely installed.
• Is the A/F sensor installed securely?
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Yes
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Go to the next step.
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No
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Retighten the A/F sensor, then go to Step 9.
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6
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INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM
• Visually inspect if there is any gas leakage is found between the exhaust manifold and A/F sensor.
• Is there gas leakage?
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Yes
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Repair or replace the malfunctioning exhaust part, then go to Step 9.
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No
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Replace the A/F sensor, then go to Step 9.
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7
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INSPECT SEALING OF ENGINE COOLANT PASSAGE
• Perform the “ENGINE COOLANT LEAKAGE INSPECTION”.
• Is there any malfunction?
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Yes
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Repair or replace the malfunctioning part, then go to Step 9.
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No
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Go to the next step.
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8
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INSPECT FUEL LINE FROM SUPPLY PUMP TO FUEL DELIVERY PIPE
• Visually inspect the fuel line for any leakage.
• Is there fuel leakage?
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Yes
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Replace the fuel line, then go to the next step.
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No
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Inspect the fuel filters for the following:
• Foreign material or staining inside the fuel filter and fuel tank.
Perform the following actions according to the result.
• If foreign material or staining is found inside the fuel filter, clean the fuel tank and replace the fuel filter.
Then go to the next step.
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9
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VERIFY TROUBLESHOOTING OF DTC P0133:00 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Switch the ignition to ON (Engine off).
• Clear the DTC from the memory using the M-MDS.
• Perform the Repair Verification Drive Mode.
(See OBD DRIVE MODE [MZR-CD 2.2].)
• Is the PENDING CODE for this DTC present?
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Yes
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Replace the PCM, then go to the next step.
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No
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Go to the next step.
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10
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTC present?
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Yes
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Go to the applicable DTC troubleshooting.
(See DTC TABLE [MZR-CD 2.2].)
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No
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Troubleshooting completed.
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