Note. Before you troubleshoot, record all freeze data and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- Reset the ECM with the HDS (see «ECM RESET»(ref-219288-S30980336842006021300000) ).
- Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.
- Test-drive in 4th gear. Starting at 1,600 rpm, accelerate for at least 5 seconds. Then decelerate for at least 5 seconds with the throttle completely closed.
- Check the Temporary DTCs or DTCs with the HDS. Is DTC P1165 indicated? YES - Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(ref-219289-S30185321932006021300000) . 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.