DTC Troubleshooting: P2195
DTC P2195: A/F Sensor (Sensor 1) Signal Stuck Lean
NOTE:
Before you troubleshoot, review the general troubleshooting information.
If the vehicle was out of fuel and the engine stalled before this DTC was stored, refuel, then 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, troubleshoot those DTCs first, then recheck for DTC P2195.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P2195 A/F Sensor (Sensor 1) Signal Stuck Lean
      

1.
MAF sensor/IAT sensor visual check:

MAF sensor/IAT sensor visual check
?1.
Remove the MAF sensor/IAT sensor.

?2.
Check for dirt or debris in the MAF sensor/IAT sensor.

Is it dirty?

     
YES
     
     
     
Remove the debris. If needed, replace the MAF sensor/IAT sensor.?
     
NO
     
     
     
Go to step 2.
2.
A/F sensor (Sensor 1) installation check:

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

Is the A/F sensor loose or disconnected from the WU-TWC?

     
YES
     
     
     
     
NO
     
     
     
Go to step 3.
3.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Start the engine.

?4.
Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on.

?5.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P2195 A/F Sensor (Sensor 1) Signal Stuck Lean
      

Is DTC P2195 indicated?

     
YES
     
     
     
Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P2195 goes away and the PCM was updated, troubleshooting is complete. If DTC P2195 goes away and the PCM was substituted, replace the original PCM.?
     
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 PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?