DTC P2196 [L3 R.H.D.]

id0102a2812800

DTC P2196

HO2S signal stuck rich

DETECTION CONDITION

• The PCM monitors HO2S output voltage when the following conditions are met. If the output voltage is more than 0.45 V for 41 s, the PCM determines that the HO2S signal is stuck at rich.
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
• Excessive fuel pressure
• Restriction in intake-air system
• 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 applicable DTC troubleshooting.
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 appropriate DTC inspection.
No
Go to the next step.
4
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is DTC P2196 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 the suspected sensor and for excessive resistance in related wiring harnesses. Repair or replace if necessary.
Then go to Step 11.
6
VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA CONDITION
• Inspect same the PIDs as Step 5 while simulating the FREEZE FRAME DATA condition.
• Is there any signal which causes severe variations?
Yes
Inspect suspected sensor and related wiring harnesses, repair or replace it.
Then go to Step 11.
No
Go to the next step.
7
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 11.
8
INSPECT HO2S
• Inspect the HO2S.
• Is there any malfunction?
Yes
Replace HO2S, then go to Step 11.
No
Go to the next step.
9
INSPECT FUEL INJECTOR
• Inspect the fuel injectors.
• Is there any malfunction?
Yes
Replace the fuel injector, then go to Step 11.
No
Go to the next step.
10
INSPECT FUEL LINE PRESSURE
• Perform the "FUEL LINE PRESSURE INSPECTION".
• Is there any malfunction?
Yes
Replace the fuel pump unit, then go to the next step.
No
Go to the next step.
11
VERIFY TROUBLESHOOTING OF DTC P2196 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.
12
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
• Is there any DTC present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.