OBD-2 code P 2195 ceck engine lite is on

DTC P2195: Heated Oxygen Sensor Inactive (bank 1, sensor 1)

TECHNICAL DESCRIPTION
The ECM effects air/fuel ratio feedback control in accordance with the signals from the right bank heater oxygen sensor (front).
If the right bank heated oxygen sensor (front) has deteriorated, corrections will be made by the right bank heated oxygen sensor (rear).
DTC P2195 becomes stored in memory if a failure is detected in the right bank heated oxygen sensor (front).
DESCRIPTIONS OF MONITOR METHODS
Right bank heated oxygen sensor (front) output voltage does not cross lean/rich criteria (about 0.5 volt ) within specified period.

MONITOR EXECUTION
Continuous

MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
Heated oxygen sensor (front) heater monitor
Misfire monitor
Sensor (The sensor below is determined to be normal)
Engine coolant temperature sensor
Intake air temperature sensor
DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

More than 20 seconds or more have passed since the engine starting sequence was completed.
Engine coolant temperature is 7 °C (45 °F) or more.
Under the closed loop air/fuel ratio control.
Intake air temperature is more than -10 °C (14 °F)
Judgment Criterion
Right bank heated oxygen sensor (front) output voltage is less than lean/rich criteria (about 0.5 volt ) for 128 seconds.
OBD-II DRIVE CYCLE PATTERN
Refer to MFI Diagnostic Function-OBD-II Drive Cycle-Pattern 23. See: Powertrain Management Computers and Control Systems Testing and Inspection Monitors, Trips, Drive Cycles and Readiness Codes OBD-II Drive Cycle

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
Right bank heated oxygen sensor (front) deteriorated.
Connector damage.
Harness damage.
ECM failed.
DIAGNOSIS

Required Special Tools:
MB991958: Scan Tool (M.U.T.-III Sub Assembly)
MB991824: V.C.I.
MB991827: USB Cable
MB991910: Main Harness A
STEP 1. Using scan tool MB991958, check data list item AC: Heated Oxygen Sensor Bank 1, Sensor 1 (right front).

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958 to the data link connector.
Start the engine and run at idle.
Set scan tool MB991958 to the data reading mode for item AC, Heated Oxygen Sensor Bank 1, Sensor 1 (right front).
Warm up the engine. When the engine is revved, the output voltage should measure 0.6 to 1.0 volt.
Warm up the engine. When the engine is idling, the output voltage should repeat 0.4 volt or less and 0.6 to 1.0 volt alternately.
Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : Go to Step 2.

NO : Replace it. Then go to Step 3.

STEP 2. Test the OBD-II drive cycle.

Carry out a test drive with the drive cycle pattern. Refer to MFI Diagnostic Function-OBD-II Drive Cycle-Pattern 23. See: Powertrain Management Computers and Control Systems Testing and Inspection Monitors, Trips, Drive Cycles and Readiness Codes OBD-II Drive Cycle
Check the diagnostic trouble code (DTC).
Q: Is DTC P2195 set?

YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to Diagnosis-ID Codes Registration Judgment Table [Vehicles with KOS] or Diagnosis-ID Codes Registration Judgment Table [Vehicles with WCM]. Then go to Step 3.

NO : It can be assumed that this malfunction is intermittent. Refer to General (Body and Chassis), How to Use Troubleshooting/Inspection Service Points-How to Cope with Intermittent Malfunctions.

STEP 3. Test the OBD-II drive cycle.

Carry out a test drive with the drive cycle pattern. Refer to MFI Diagnostic Function-OBD-II Drive Cycle-Pattern 23. See: Powertrain Management Computers and Control Systems Testing and Inspection Monitors, Trips, Drive Cycles and Readiness Codes OBD-II Drive Cycle
Check the diagnostic trouble code (DTC).
Q: Is DTC P2195 set?

YES : Retry the troubleshooting.

NO : The inspection is complete.