DTC P0133: Rear A/F Sensor (Bank 1, Sensor 1) Circuit Slow Response; DTC P0153: Front A/F Sensor (Bank 2, Sensor 1) Circuit Slow Response
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- 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 (Bank 2).
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
- Test-drive under these conditions:
- Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C)
- Transmission in D
- Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed between 32-81 mph (52-130 km/h)
- '08-10 models: Engine speed between 1,250 and 2,200 rpm
- 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 6.
NO -If the screen 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 screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION or NOT COMPLETED, go to step 3 and recheck.
- Turn the ignition switch to LOCK (0).
- Replace the A/F sensor (Sensor 1) (see A/F SENSOR REPLACEMENT ).
- Turn the ignition switch to ON (II).
- Reset the PCM with the HDS.
- Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
- Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
- Test-drive under these conditions:
- Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C)
- Transmission in D
- Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed between 32-81 mph (52-130 km/h)
- '08-10 models: Engine speed between 1,250 and 2,200 rpm
- Check for Pending or Confirmed DTC's with the HDS.
Is DTC P0133 and/or P0153* indicated?
YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1.
NO -Go to step 14.
- 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. If any other Pending or Confirmed DTC's were indicated in step 13, go to the indicated DTC'S TROUBLESHOOTING .
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 driving until a result comes on. If the screen indicates OUT OF CONDITION or NOT COMPLETED, go to step 12.