P0133

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

NOTE: If DTC P0139 is stored at the same time as DTC P0133, troubleshoot DTC P0139 first, then recheck for DTC P0133.

1. Turn the ignition switch ON (II)
2. Clear the DTC with the HDS
3. Start the engine. Hold the engine speed at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
4. Test drive under the following conditions
- Engine coolant temperature more than 158 °F (70 °C)
- A/T in D position (M/T in 5th gear)
- Vehicle speed at 30 mph (48 km/h) or more, and engine speed between 1,000 and 3,000 rpm

5. Check the AF FB AVG in the DATA LIST with the HDS

Is the value between 0.8 - 1.2?

YES - Go to step 6.

NO - Go to step 4 and recheck.

6. Monitor the OBD STATUS for DTC P0133 in the DTCs MENU with the HDS

Does the screen indicate FAILED?

YES - Go to step 7.

NO - If the screen indicates PASSED, intermittent failure, system is OK at this time. If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates Out of CONDITION, go to step 2 and recheck.

7. Turn the ignition switch OFF.
8. Replace the A/F sensor (Sensor 1).
9. Turn the ignition switch ON (II).
10. Reset the ECM/PCM with the HDS.
11. Do the ECM/PCM idle learn procedure.
12. Start the engine Hold the engine speed at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
13. Test drive under the following conditions.
- Engine coolant temperature more than 158 °F (70 °C)
- A/T in D position (M/T in 5th gear)
- Vehicle speed at 30 mph (48 km/h) or more, and engine speed between 1,000 and 3,000 rpm.

14. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P0133 is indicated, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC troubleshooting.

NO - Go to step 15.

15. Monitor the OBD STATUS for DTC P0133 in the DTCs MENU with the HDS.

Does the screen indicates PASSED?

YES - Troubleshooting is complete.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1. If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates Out of CONDITION, go to step 12 and recheck.