DTC Troubleshooting: 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, 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 dirt or debris. If needed, replace the MAF sensor/IAT sensor, then do the repair verification.
     
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 exhaust pipe?

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

Problem verification
?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on.

?4.
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 do the repair verification.
     
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.?
Repair verification (OBD STATUS check):

?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Reset the PCM with the HDS.


?3.
Do the PCM idle learn procedure.

?4.
Start the engine, and let it idle without load (A/T in P or N, M/T in neutral) until the radiator fan comes on.

?5.
Monitor the OBD STATUS for DTC P2195 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P2195 A/F Sensor (Sensor 1) Signal Stuck Lean
  


Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?

     
PASSED
     
     
     
Troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting. ?
     
FAILED
     
     
     
Go to step 1 and recheck. If the PCM was updated, substitute a known-good PCM, then check the OBD STATUS again.
     
NOT COMPLETED
     
     
     
Keep the test condition until a result comes on.