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 DTC P2195 [L3 Turbo]

DTC P2195 [L3 Turbo]

id0102b7812700

DTC P2195

A/F sensor signal stuck lean

DETECTION CONDITION

• The PCM monitors the A/F sensor output current when the following conditions are met. If the average output current is more than 1.2 A for 25 s, the PCM determines that the A/F sensor has a malfunction.
MONITORING CONDITION
- ECT: more than 70 °C {158 °F}
- Engine speed: 1,000-3,200 rpm
- Charging efficiency: 20-62.5%
- Output voltage from the HO2S: 0.2 V or above
Diagnostic support note
• This is an intermittent monitor (A/F sensor , HO2S).
• The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTCs are stored in the PCM memory.

POSSIBLE CAUSE

• A/F sensor malfunction
• Fuel injector malfunction
• Insufficient fuel line pressure
• Fuel pressure sensor malfunction
• Relief valve (built-in fuel delivery pipe) malfunction
• Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction
• High pressure fuel pump malfunction
• Exhaust gas leakage
• Air suction at intake-air system malfunction
• Fuel leakage
• MAF sensor malfunction
• ECT sensor malfunction
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS 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 RELATED REPAIR INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service 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 to off, then to 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 inspection.
No
Go to the next step.
4
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is DTC P2195 on 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.
- APP1
- APP2
- ECT
- MAF
- TP
- VSS
• Are the PIDs normal?
Yes
Go to the next step.
No
Inspect the malfunctioning part according to the inspection results.
Then go to Step 16.
6
VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA CONDITION
• Connect the WDS or equivalent to the DLC-2.
• Verify the following PIDs under FREEZE FRAME DATA condition.
- APP1
- APP2
- ECT
- MAF
- TP
- VSS
• Are the PIDs normal?
Yes
Go to the next step.
No
Inspect the malfunctioning part according to the inspection results.
Then go to Step 16.
7
INSPECT INTAKE-AIR SYSTEM FOR EXCESSIVE AIR SUCTION
• Visually inspect for loosen, cracks or damages hose in intake-air system.
• Is there any malfunction?
Yes
Repair or replace the malfunctioning part, then go to Step 16.
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 the MAF/IAT sensor, then go to Step 16.
9
INSPECT A/F SENSOR
• Inspect the A/F sensor.
• Is there any malfunction?
Yes
Replace the A/F sensor, then go to Step 16.
No
Go to the next step.
10
INSPECT FUEL INJECTOR
• Inspect the fuel injector.
• Is there any malfunction?
Yes
Replace the suspected fuel injector, then go to Step 16.
No
Go to the next step.
11
INSPECT FUEL PRESSURE (HIGH-SIDE)
• Access and monitor FUEL_PRES PID.
• Is the FUEL_PRES PID value within the specified?
Yes
Go to Step 15.
No
Go to the next step.
12
IDENTIFY CAUSE BY FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP
• Is the vehicle accelerate performance normally?
Yes
Go to the next step.
No
Go to Step 14.
13
INSPECT FUEL PRESSURE SENSOR
• Inspect the fuel pressure sensor.
• Is the fuel pressure sensor normal?
Yes
Go to Step 15.
No
Replace the fuel delivery pipe, then go to Step 16.
14
INSPECT HIGH PRESSURE FUEL PUMP
• Replace the high pressure fuel pump
• Monitor FUEL_PRES PID
• Is the FUEL_PRES PID value within the specified?
Yes
Go to Step 16.
No
Go to the next step.
15
INSPECT FUEL PRESSURE (LOW-SIDE)
• Connect the fuel pressure gauge between fuel pump and high pressure fuel pump.
• Measure the low side fuel pressure.
• Is the low side fuel pressure within the specified?
Yes
Go to the next step.
No
Inspect for following:
• Fuel line restriction
• Fuel filter clogging
If okay replace the fuel pump. Then go to the next step.
16
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.
• Perform the PCM Adopted Memory Produce Drive Mode and A/F sensor heater, HO2S heater, and TWC Repair Verification Drive Mode.
• Is the PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
17
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.