Mitsubishi P2195:
Heated Oxygen Sensor Inactive (bank 1, sensor 1)
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
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.
DIAGNOSI