DTC P2270 (1.5 L Engine)

DTC P2270  : Secondary HO2S (Sensor 2) Circuit Signal Stuck Lean

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. 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 (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle for 2 minutes.

   Test-drive the vehicle under these conditions:

   • Engine coolant temperature (ECT Sensor 1) above 158 deg.F (70 deg.C)
   • CVT in D, M/T in 4th
   • Engine speed between 1, 500 - 3, 000 rpm
   • Drive 30 seconds or more

   Signal	Current conditions
   	Values	Unit
   ECT Sensor 1
   Engine Speed

   -5. Monitor the OBD STATUS for DTC P2270 in the DTCs MENU with the HDS.

   DTC Description	OBD STATUS
   P2270 Secondary HO2 (Sensor 2) Circuit Signal Stuck Lean

   Does the HDS indicate FAILED?

   YES 

   The failure is duplicated. Replace the secondary HO2S (Sensor 2) .

   NO 

   If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot . If the HDS indicates EXECUTING, keep driving until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 1-3 and recheck.