DTC Troubleshooting

DTC Troubleshooting: P2195, P2197, P2195, P2197

DTC P2195:

Rear A/F Sensor (Bank 1, Sensor 1) Signal Stuck Lean

DTC P2197:

Front A/F Sensor (Bank 2, Sensor 1) Signal Stuck Lean

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
- Information marked with an asterisk (*) applies to the front bank (Bank 2).
- If the vehicle was out of fuel and the engine stalled before this DTC was stored, refuel, and clear the DTC with the HDS.
- If DTC P2101, P2118, P2135, P2138, P2176, or a combination of P2122 and P2127, P2122 and P2138, or P2127 and P2138 is stored at the same time as DTC P2195 (P2197)*, troubleshoot those DTCs first, then recheck for DTC P2195 (P2197)*.

1. Check for dirt or debris on the MAF sensor/IAT sensor.

Is it dirty?

YES -

Remove the debris. If needed, replace the MAF sensor/IAT sensor Service and Repair, then go to step 9.

NO -

Go to step 2.

2. 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 7.

NO -

Go to step 3.

3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

4. Clear the DTC with the HDS.

5. Start the engine, and let it idle for 2 minutes.

6. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2195 and/or P2197* indicated?

YES -

Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 14.

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/PCM. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

8. Reinstall the A/F sensor (Sensor 1) A/F Sensor Replacement.

9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

10. Reset the ECM/PCM with the HDS.

11. Do the ECM/PCM idle learn procedure ECM/PCM Idle Learn Procedure.

12. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2195 and/or P2197* indicated?

YES -

Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1.

NO -

Go to step 13.

13. Monitor the OBD STATUS for DTC P2195 and/or P2197* in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES -

Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 12, go to the indicated DTC's troubleshooting.

NO -

If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1. If the screen indicates NOT COMPLETED, keep idling until a result comes on.

14. Update the ECM/PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good PCM.

15. Start the engine, and let it idle for 2 minutes.

16. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2195 and/or P2197* indicated?

YES -

Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then go to step 15. If the ECM/PCM was substituted, go to step 1.

NO -

Go to step 17.

17. Monitor the OBD STATUS for DTC P2195 and/or P2197* in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES -

If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM Service and Repair. If any other Pending or Confirmed DTCs were indicated in step 16, go to the indicated DTC's troubleshooting.

NO -

If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then go to step 15. If the ECM/PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep idling until a result comes on.