P0133

DTC P0133: Slow Response in Primary HO2S (Sensor 1) Circuit

NOTE: If DTC P0131, P0132 and/or P0135 are stored at the same time as DTC P0133, troubleshoot those DTCs first, then recheck for DTC P0133. If DTC P1162 is stored at the same time as DTC P1163, troubleshoot DTC P1162 first, then recheck for DTC P1163.

1. Do the ECM/PCM Reset Procedure.
2. Check for a Temporary DTC with the scan tool.
Is Temporary DTC P0133 and/or P1163 indicated?
YES-Replace the Primary HO2S (Sensor 1).
NO-Go to step 3.
3. Test-drive under following conditions.
- 55 mph (89 kph) steady speed
- A/T in D4 position (M/T in 5th gear)
- Until readiness code or Temporary DTC P0133 and/or P1163 (F23A4 engine) comes on
Is Temporary DTC P0133 and/or P1163 indicated?
YES-Replace the Primary HO2S (Sensor 1).
NO-Intermittent failure, system is OK at this time.
Check for poor connections or loose wires at C101 (located under the under-hood fuse/relay box), the Primary HO2S (Sensor 1) and the ECM/PCM.