DTC P0133
DTC P0133 : A/F Sensor (Sensor 1) Malfunction/Slow Response
- 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 Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P0133 A/F Sensor (Sensor 1) Malfunction/Slow Response |
DTC (PGM-FI)
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Turn the vehicle to the OFF (LOCK) mode.
-4. Enter the maintenance mode, then start the engine .
-5. Hold the engine speed at 3000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive the vehicle under these conditions:
- Engine coolant temperature (ECT SENSOR 1) above 158 deg.F (70 deg.C)
- Transmission in D
- Engine speed between 1500-3000 RPM
- Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed of 32 mph (52 km/h) or more
Signal Current conditions Values Unit ECT Sensor 1 Engine Speed Vehicle Speed Data List
-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 OBD Status
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 1-4 on this step and recheck.