DTC P2096:00 [MZR 2.0 DISI]

id0102f5900400

DTC P2096:00

Target A/F feedback system too lean
DETECTION CONDITION
•  The PCM monitors the target A/F fuel trim while under target A/F feedback control. If the fuel trim is more than the specification, the PCM determines that the target A/F feedback system is too lean.
Diagnostic support note
•  This is a continuous monitor (fuel system).
•  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 first drive cycle.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  Exhaust gas leakage
•  HO2S malfunction
•  IAT sensor malfunction
•  Erratic signal to PCM
―  ECT sensor signal malfunction
―  MAF sensor signal malfunction
―  TP sensor signal malfunction
―  VSS signal malfunction
―  Related connector or terminals malfunction
―  Related wiring harness malfunction
•  Exhaust gas leakage
•  A/F sensor malfunction
•  Air suction in intake-air system
•  MAF sensor malfunction
•  Improper operation of ignition system
―  Spark plug malfunction
―  Ignition coil malfunction
―  Ignition coil related wiring harness malfunction
•  Insufficient engine compression
•  High-pressure side fuel delivery system malfunction
―  Fuel pressure sensor (built-in fuel delivery pipe) malfunction
―  Spill valve control solenoid valve control circuit malfunction (damaged to driver in PCM caused by short circuit to ground system)
―  Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction
―  Relief valve (built-in fuel delivery pipe) malfunction
―  High pressure fuel pump malfunction
•  Low-pressure side fuel delivery system malfunction
―  Low pressure side fuel line restriction (between fuel pump unit and high pressure fuel pump)
―  Fuel filter clogging
―  Pressure regulator (built-in fuel pump unit) malfunction
―  Fuel pump unit malfunction
•  Improper operation of EGR valve (stuck open)
•  Improper operation of fuel injector
―  Fuel injector malfunction
―  Fuel injector related wiring harness malfunction
•  ECT sensor malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2)
•  Perform the Freeze Frame PID Data Access Procedure.
•  Is the DTC P2096:00 on FREEZE FRAME DATA (Mode 2)?
Yes
Go to the next step.
No
Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2).
(See DTC TABLE [MZR 2.0 DISI].)
2
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED
•  Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (fuel system related) been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
3
VERIFY RELATED SERVICE 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.
4
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition to off, then to ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the PENDING CODE/DTC P0171:00 also present?
Yes
Go to the applicable PENDING CODE or DTC inspection.
(See DTC P0171:00 [MZR 2.0 DISI].)
No
Go to the next step.
5
INSPECT HO2S
•  Inspect the HO2S.
•  Is there any malfunction?
Yes
Go to the next step.
No
Go to Step 7.
6
INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM
•  Visually inspect for the exhaust gas leakage between TWC and HO2S.
•  Is there any leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
No
Replace the HO2S, then go to Step 25.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [MZR 2.0 DISI].)
7
INSPECT IAT SENSOR
•  Inspect the IAT sensor.
•  Is there any malfunction?
Yes
Replace the MAF/IAT sensor, then go to Step 25.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.0 DISI].)
No
Go to the next step.
8
VERIFY CURRENT INPUT SIGNAL STATUS
•  Access the following PIDs using the M-MDS:
―  ECT
―  MAF
―  TP REL
―  VSS
•  Are the PIDs normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
9
VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA (MODE 2) CONDITION
Caution
•  While performing this step, always operate the vehicle in a safe and lawful manner.
•  When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
•  Access the same PIDs as in Step 8 while simulating under the FREEZE FRAME DATA (Mode 2) conditions.
•  Are the PIDs normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
10
INSPECT A/F SENSOR
•  Inspect the A/F sensor.
•  Is there any malfunction?
Yes
Go to the next step.
No
Go to Step 12.
11
INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM
•  Visually inspect for the exhaust gas leakage between exhaust manifold and A/F sensor.
•  Is there any leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
No
Replace the A/F sensor, then go to Step 25.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [MZR 2.0 DISI].)
12
VERIFY CURRENT INPUT SIGNAL STATUS OF MAF SENSOR
•  Start the engine.
•  Access the MAF PID using the M-MDS.
•  Verify that the MAF PID value changes quickly according to the engine speed.
•  Is the MAF PID value normal?
Yes
Go to Step 14.
No
Go to the next step.
13
INSPECT FOR EXCESSIVE AIR SUCTION OF INTAKE AIR SYSTEM
•  Visually inspect for loosen, cracks or damages hoses on the intake air system.
Note
•  Engine speed may change when rust penetrating agent is sprayed on the air suction area.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
No
Replace the MAF/IAT sensor, then go to Step 25.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.0 DISI].)
14
INSPECT IGNITION SYSTEM OPERATION
•  Perform the Spark Test.
•  Is a strong blue spark visible at each cylinder?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
15
INSPECT ENGINE COMPRESSION
•  Inspect the engine compression.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
No
Go to the next step.
16
INSPECT FUEL PRESSURE (HIGH-SIDE)
•  Access the FUEL_PRES PID using the M-MDS.
•  Is the FUEL_PRES PID value within the specification?
Yes
Go to Step 21.
No
Go to the next step.
17
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 19.
18
INSPECT FUEL PRESSURE SENSOR
•  Inspect the fuel pressure sensor.
•  Is there any malfunction?
Yes
Replace the fuel delivery pipe, then go to Step 25.
(See FUEL INJECTOR REMOVAL/INSTALLATION [MZR 2.0 DISI].)
No
Go to Step 21.
19
INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND
•  Switch the ignition to off.
•  Disconnect the high pressure fuel pump and PCM connectors.
•  Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 25.
No
Go to the next step.
20
INSPECT HIGH PRESSURE FUEL PUMP
•  Replace the high pressure fuel pump.
•  Access the FUEL_PRES PID using the M-MDS.
•  Is the FUEL_PRES PID value within the specification?
Yes
High pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction.
•  Go to Step 25.
No
Relief valve (built-in fuel delivery pipe) malfunction.
•  Replace the fuel delivery pipe, then go to Step 25.
21
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 specification?
Yes
Go to the next step.
No
Inspect for following:
•  Fuel line restriction
•  Fuel filter clogging
―  If there is any malfunction:
•  Repair or replace the malfunctioning part according to the inspection results.
―  If there is no malfunction:
•  Replace the fuel pump unit.
Go to Step 25.
22
INSPECT EGR VALVE OPERATION
•  Perform the EGR Control System Inspection.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
No
Go to the next step.
23
INSPECT FUEL INJECTOR OPERATION
•  Perform the Fuel Injector Operation Inspection.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 25.
No
Go to the next step.
24
INSPECT ECT SENSOR
•  Inspect the ECT sensor.
•  Is there any malfunction?
Yes
Replace the ECT sensor, then go to the next step.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [MZR 2.0 DISI].)
No
Go to the next step.
25
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the Pending Trouble Code Access Procedure.
•  Is the PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZR 2.0 DISI].)
No
Go to the next step.
26
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR 2.0 DISI].)
No
DTC troubleshooting completed.