DTC P0133:00 [MZR-CD 2.2]

id0102f3702400

DTC P0133:00

A/F sensor circuit malfunction
DETECTION CONDITION
•  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
―  Following conditions are met:
•  A/F sensor heater monitor is completed.
•  Fuel system loop status is closed loop fuel control.
•  Battery voltage:11—16 V
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 (mode2) and snapshot data are available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  A/F sensor malfunction
―  A/F sensor deterioration
―  A/F sensor looseness
•  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

Diagnostic procedure

STEP

INSPECTION

ACTION
1
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE2)
•  Is DTC P0133:00 on FREEZE FRAME DATA (mode2)?
Yes
Go to the next step.
No
Go to troubleshooting procedures for DTC on FREEZE FRAME DATA (mode2).
(See DTC TABLE [MZR-CD 2.2].)
2
VERIFY FREEZE FRAME DATA (MODE2) OR SNAPSHOT DATA HAVE BEEN RECORDED
•  Have FREEZE FRAME DATA (mode2) or snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (mode2) and snapshot data 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
INSPECT A/F SENSOR
•  Inspect A/F sensor.
•  Is there any malfunction?
Yes
Go to the next step.
No
Go to Step 7.
5
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 9.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
6
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?
Yes
Repair or replace the malfunctioning exhaust part, then go to Step 9.
No
Replace the A/F sensor, then go to Step 9.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
7
INSPECT SEALING OF ENGINE COOLANT PASSAGE
•  Perform the “ENGINE COOLANT LEAKAGE INSPECTION”.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part, then go to Step 9.
No
Go to the next step.
8
INSPECT FUEL LINE FROM SUPPLY PUMP TO FUEL DELIVERY PIPE
•  Visually inspect the fuel line for any leakage.
•  Is there fuel leakage?
Yes
Replace the fuel line, then go to the next step.
No
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.
9
VERIFY TROUBLESHOOTING OF DTC P0133:00 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the Repair Verification Drive Mode.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD 2.2].)
No
DTC troubleshooting completed.