P0133

DTC P0133: Rear A/F Sensor (Bank 1, Sensor 1) Circuit Slow Response

NOTE:
- If DTC P0139 and/or P0159* is stored at the same time as DTC P0133 and/or P0153*, troubleshoot DTC P0139 and/or P0159* first, then recheck for DTC P0133 and/or P0153*.
- Information marked with an asterisk (*) applies to the front bank.

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
- Vehicle speed at 30 mph (48 km/h) or more, and engine speed between 1,200 rpm and 2,250 rpm

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

Is the value 0.8 - 1.2?

YES - Go to step 6.

NO - Go to step 4, then recheck.

6. Monitor the OBD STATUS for DTC P0133 and/or P0153* 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 the driving condition continually 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 PCM with the HDS.
11. Do the 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
- Vehicle speed at 30 mph (48 km/h) or more, and engine speed between 1,200 rpm and 2,250 rpm

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

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P0133 and/or P0153* is indicated. check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Go to step 15.

15. Monitor the OBD STATUS for DTC P0133 and/or P0153* in the DTCs MENU with the HDS.

Does the screen indicate 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 PCM, then go to step 1. If the screen indicates EXECUTING, keep the driving condition continually until a result comes on. If the screen indicates OUT OF CONDITION, go to step 12 and recheck.