P2195

DTC P2195: A/F Sensor (Sensor 1) Signal Stuck Lean

NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- If the vehicle was out of fuel and the engine stalled before this DTC was stored, refuel and clear the DTC with the HDS.
- lfDTCP2101,P2118,P2135,P2138,P2176ora combination of P2122 and P2127, P2122 and P2138, orP2127and P2138 is stored at the same time, troubleshoot them first, then recheck for DTC P2195.

1. Check the installation of the A/F sensor (Sensor 1).

Is the A/F sensor loose or disconnected from the exhaust pipe?

YES - Go to step 6.

NO - Go to step 2.

2. Turn the ignition switch ON (II).
3. Clear the DTC with the HDS.
4. 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.
5. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P2195 is indicated, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM, then go to step 13. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - 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 ECM.

6. Turn the ignition switch OFF.
7. Reinstall the A/F sensor (Sensor 1).
8. Turn the ignition switch ON (II).
9. Reset the ECM with the HDS.
10. Do the ECM idle learn procedure.
11. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P2195 is indicated, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Go to step 12.

12. Monitor the OBD STATUS for DTC P2195 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - Troubleshooting is complete.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor : (Sensor 1) and the ECM, then go to step 1. If the screen indicated NOT COMPLETED, go to step 10 and recheck.

13. Update the ECM if it does not have the latest software, or substitute a known-good ECM.
14. 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.
15. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2195 indicated?

YES - Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM. If the ECM was updated, substitute a known-good ECM, then go to step 14. If the ECM was substituted, go to step 1.

NO - If no Temporary DTCs or DTCs are indicated, go to step 16. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

16. Monitor the OBD STATUS for DTC P2195 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM. If the ECM was updated, substitute a known-good ECM, then go to step 14. If the ECM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 14 and recheck.