P0133

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

NOTE:
- Information marketed with an asterisk (*) applies to '03 Non-SULEV model.
- If DTC P1157, P2238 (P1159)*, or P2252 (P1158)* is stored at the same time as DTC P0133 (P1163)*, troubleshoot DTC P1157, P2238 (P1159)* or P2252 (P1158)* first, then recheck for DTC P0133 (P1162)*.

1. Reset the ECM with the HDS.
2. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on.
3. Test-drive under these conditions:

- 55 mph (89 km/h) steady speed
- CVT in D (M/T in 5th gear)
- Until readiness code or Temporary DTC P0133 (P1163)* and/or P0133 (P1163)* comes on

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

Is DTC P0133 (P1163)* indicated?

YES - Replace the A/F sensor (Sensor 1).

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM.