Note. If DTCs P0131, P0132 and/or P0135 are set with P0133, trouble shoot DTC P0133 last.
- Perform PCM reset procedure. See «TESTS W/CODES - INTRODUCTION»(ref-16345) article. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral until radiator fan comes on. Allow engine to idle. Connect SCS Service Connector (07PAZ-0010100 ). Test drive vehicle at 55 MPH, with transmission in D4 position (A/T) or 5th gear (M/T), until readiness code comes on.
- If DTC P0133 is not indicated, problem is intermittent. System is okay at this time. Check for poor connections or loose wires at HO2S-1 and PCM connectors. See «WIRING DIAGRAMS»(ref-16355) article. Repair as necessary. If DTC P0133 is indicated, replace primary HO2S-1.