DTC Troubleshooting: P0133
DTC P0133: A/F Sensor (Sensor 1) Malfunction/Slow Response
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0133 A/F Sensor (Sensor 1) Malfunction/Slow Response
    

1.
Problem verification:

Problem verification
?1.
Record all the on-board snapshots with the HDS.

?2.
Turn the vehicle to the ON mode.

?3.
Clear the DTC with the HDS.


?4.
Start the engine.

?5.
Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.

?6.
Test-drive the vehicle for several minutes in the range of these recorded on-board snapshot parameters:
Engine Speed
Vehicle Speed
ECT Sensor 1
MAP Sensor (Hi Res)
REL TP Sensor
Signal
Current conditions
Values
Unit
Engine Speed
    
Vehicle Speed
    
ECT Sensor 1
    
MAP Sensor (Hi Res)
    
REL TP Sensor
    

?7.
Monitor the OBD STATUS for DTC P0133 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P0133 A/F Sensor (Sensor 1) Malfunction/Slow Response
  

Does the HDS indicate FAILED?

     
YES
     
     
     
     
NO
     
     
     
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot. If the HDS indicates EXECUTING, keep driving until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 1-6 on this step and recheck.?