DTC P0133 (1.5 L Engine)

DTC P0133  : A/F Sensor (Sensor 1) Malfunction/Slow Response

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• If DTC P0139 is stored at the same time as DTC P0133, troubleshoot DTC P0139 first, then recheck for DTC P0133.

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Start the engine. Hold the engine speed at 3, 00 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.

   -4. Test-drive the vehicle under these conditions:

   • Engine coolant temperature (ECT Sensor 1) above 158 deg. F (70 deg. C)
   • CVT in D, M/T in 4th or 5th
   • Drive the vehicle at a steady speed of 25 mph (40 km/h) or less for at least 5 minutes, then drive at a steady speed of 26 mph (41 km/h) or more and engine speed between 1, 00 - 3, 00 rpm for at least 9 seconds.

   Signal	Current conditions
   	Values	Unit
   ECT Sensor 1
   Engine Speed
   Vehicle Speed

   -5. 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 

   The failure is duplicated. Replace the A/F sensor (Sensor 1) .

   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 1-3 on this step and recheck.