DTC P0133:00: Notes

DTC P0133:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P0133:00	A/F sensor circuit slow response
DETECTION CONDITION	The PCM monitors the peak differential value of the A/F sensor signal after the A/F fluctuation being provided when the following conditions are met. If the peak differential value is lower than the threshold value, the PCM determines that the A/F sensor circuit is slow. MONITORING CONDITIONS Drive Mode 03 (EGR System, 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. Fuel system loop status is closed loop fuel control. Engine speed: 1, 350-3, 500 rpm Absolute load: 21-71% (at engine speed of 2, 500 rpm ) Intake air volume: 5-40 g/s Engine coolant temperature: above 60°C {140°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. PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	A/F sensor looseness Exhaust system leakage A/F sensor malfunction A/F sensor deterioration Fuel pressure sensor malfunction Clogged or restricted fuel line Fuel leakage in the fuel line between the high-pressure fuel pump and the fuel pump unit Fuel pump unit malfunction Purge solenoid valve malfunction Improper connection of purge solenoid hose Engine internal malfunction Leakage engine coolant to combustion chamber Insufficient engine compression PCM malfunction

DTC P0133:00

A/F sensor circuit slow response

DETECTION CONDITION

The PCM monitors the peak differential value of the A/F sensor signal after the A/F fluctuation being provided when the following conditions are met. If the peak differential value is lower than the threshold value, the PCM determines that the A/F sensor circuit is slow.

MONITORING CONDITIONS

Drive Mode 03 (EGR System, 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.
- Fuel system loop status is closed loop fuel control.
Engine speed: 1, 350-3, 500 rpm
Absolute load: 21-71% (at engine speed of 2, 500 rpm )
Intake air volume: 5-40 g/s
Engine coolant temperature: above 60°C {140°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.
PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

A/F sensor looseness
Exhaust system leakage
A/F sensor malfunction
- A/F sensor deterioration
Fuel pressure sensor malfunction
Clogged or restricted fuel line
Fuel leakage in the fuel line between the high-pressure fuel pump and the fuel pump unit
Fuel pump unit malfunction
Purge solenoid valve malfunction
Improper connection of purge solenoid hose
Engine internal malfunction
- Leakage engine coolant to combustion chamber
- Insufficient engine compression
PCM malfunction