DTC P2195 [L3 R.H.D.]

id0102a2812700

DTC P2195

HO2S signal stuck lean

DETECTION CONDITION

• The PCM monitors the HO2S output voltage when the following conditions are met. If the output voltage is less than 0.45 V for 41 s, the PCM determines that the HO2S signal is stuck at lean.
MONITORING CONDITION
- Fuel injection control system status: feedback zone
- ECT: more than 70 ×C {158 ×F}
- Engine speed: more than 1,500 rpm
Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunctioning condition in two consecutive drive cycles or in one drive cycle if the DTC for the same malfunction has been stored in the PCM.
• The PENDING CODE is available if PCM detects the above malfunction conditions during first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.

POSSIBLE CAUSE

• HO2S malfunction
• Fuel injector malfunction
• Insufficient fuel line pressure
• Leakage exhaust gas
• Air suction at intake-air system
• Leakage fuel
• MAF sensor malfunction
• ECT sensor malfunction
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE OR STORED DTC
• Turn the ignition switch off, then to the ON position (engine off).
• Verify the related PENDING CODE or stored DTCs.
• Is the DTC P2177 or P2187 also present?
Yes
Go to the applicable DTC troubleshooting.
No
Go to the next step.
4
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is DTC P2195 in the FREEZE FRAME DATA?
Yes
Go to the next step.
No
Go to FREEZE FRAME DATA DTC inspection.
5
VERIFY CURRENT INPUT SIGNAL STATUS
• Connect the WDS or equivalent to the DLC-2.
• Verify the following PIDs.
- ECT
- MAF
- TP
- VSS
• Are the PIDs normal?
Yes
Go to the next step.
No
Inspect suspected sensor and for excessive resistance in related wiring harnesses. Repair or replace if necessary.
Go to Step 13.
6
VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA CONDITION
• Inspect the same PIDs as Step 5 while simulating the FREEZE FRAME DATA condition.
• Is there any signal which causes severe variation?
Yes
Inspect suspected sensor and related wiring harnesses, repair or replace if necessary.
Go to Step 13.
No
Go to the next step.
7
INSPECT INTAKE-AIR SYSTEM FOR EXCESSIVE AIR SUCTION
• Visually inspect for loose, cracked or damaged hoses in intake-air system.
• Is there any malfunction?
Yes
Repair or replace the malfunctioning part, then go to Step 13.
No
Go to the next step.
8
VERIFY CURRENT INPUT SIGNAL STATUS OF MAF SENSOR
• Connect the WDS or equivalent to the DLC-2.
• Start the engine.
• Access the MAF PID.
• Verify that the MAF PID changes quickly according to engine speed.
• Is the PID normal?
Yes
Go to the next step.
No
Replace MAF/IAT sensor, then go to Step 13.
9
INSPECT HO2S
• Inspect the HO2S.
• Is there any malfunction?
Yes
Replace HO2S, then go to Step 13.
No
Go to the next step.
10
INSPECT FUEL INJECTOR
• Inspect the fuel injectors.
• Is there any malfunction?
Yes
Replace the fuel injector, then go to Step 13.
No
Go to the next step.
11
INSPECT FUEL LINE PRESSURE
• Perform the "FUEL LINE PRESSURE INSPECTION".
• Is there any malfunction?
Yes
Go to the next step.
No
Go to Step 13.
12
INSPECT FUEL SYSTEM FOR FUEL LEAKAGE
• Visually inspect for fuel leakage in the fuel system.
• Is there fuel leakage?
Yes
Repair or replace the malfunctioning part, then go to the next step.
No
Replace the fuel pump unit, then go to the next step.
13
VERIFY TROUBLESHOOTING OF DTC P2195 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Start the engine and run it at idle with A/C off.
• Run the engine at Approx. 3,000 rpm and Approx. 4,500 rpm at least 15 s for each engine speed.
• Idle the engine for 5 min.
• Cruise the vehicle above 89 km/h {55 mph} at least 1 min. and above 72-78 km/h {45-55 mph} at least 3 min.
• Is the PENDING CODE for this DTC present?
Yes
Replace PCM, then go to the next step.
No
Go to the next step.
14
VERIFY AFTER REPAIR PROCEDURE
• Perform "AFTER REPAIR PROCEDURE".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.