DTC 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, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems, or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016), or How to Troubleshoot the A/T System (2014 2015) .
• 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, 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 (P2197) *, troubleshoot those DTCs first, then recheck for DTC P2195 (P2197) *.

DTC (PGM-FI)

1. 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

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

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

   YES 

   Reinstall the A/F sensor (Sensor 1) .

   NO 

   Go to step 3.

3. Problem verification

   -1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

   - 3. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) 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 Rear A/F Sensor (Bank 1, Sensor 1) Signal Stuck Lean
   P2197 Front A/F Sensor (Bank 2, Sensor 1) Signal Stuck Lean

   Is DTC P2195 and/or P2197 * 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 - Refer to: PCM Removal and Installation (2016), or PCM Removal and Installation (2014 2015) .

   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.