DTC P2097:00 [L3 Turbo]

DTC P2097:00 [L3 Turbo]SM2444124

id0102b7707600

DTC P2097:00	Target A/F feedback system too rich
DETECTION CONDITION	• The PCM monitors the target A/F fuel trim while under target A/F feedback control. If the fuel trim is less than specification, the PCM determines that the target A/F feedback system is too rich. Diagnostic support note • This is a continuous monitor (fuel system). • 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 conditions during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • DTCs are 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 • High-pressure side fuel delivery system malfunction ― Fuel pressure sensor (built-in fuel delivery pipe) 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 • 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 ― Fuel pump unit malfunction ― Fuel pressure regulator (built-in fuel pump unit) malfunction • Purge solenoid valve malfunction • Insufficient engine compression • Fuel injector malfunction • ECT sensor malfunction • PCM malfunction

DTC P2097:00

Target A/F feedback system too rich

DETECTION CONDITION

• The PCM monitors the target A/F fuel trim while under target A/F feedback control. If the fuel trim is less than specification, the PCM determines that the target A/F feedback system is too rich.

Diagnostic support note

• This is a continuous monitor (fuel system).

• 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 conditions during the first drive cycle.

• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

• DTCs are 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

• High-pressure side fuel delivery system malfunction

― Fuel pressure sensor (built-in fuel delivery pipe) 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

• 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

― Fuel pump unit malfunction

― Fuel pressure regulator (built-in fuel pump unit) malfunction

• Purge solenoid valve malfunction

• Insufficient engine compression

• Fuel injector 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. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Is the DTC P2097:00 on FREEZE FRAME DATA (Mode 2)?	Yes	Go to the next step.
1		No	Go to the troubleshooting procedures for DTC on FREEZE FRAME DATA (Mode 2). (See DTC TABLE [L3 Turbo].)
2	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED • Have the snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (fuel system related) been recorded?	Yes	Go to the next step.
2		No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on 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.
3		No	Go to the next step.
4	VERIFY RELATED PENDING CODE AND STORED DTC • Turn the ignition switch off, then to the ON position (engine off). • Perform the DTC Reading Procedure and Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Are any other DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 Turbo].)
4		No	Go to the next step.
5	INSPECT HO2S • Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Go to the next step.
5		No	Go to Step 7.
6	INSPECT EXHAUST GAS LEAKAGE • Visually inspect for the exhaust gas leakage between the TWC and HO2S. • Is there any leakage?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 21.
6		No	Replace the HO2S, then go to Step 21. (See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [L3 Turbo].)
7	INSPECT IAT SENSOR • Inspect the IAT sensor. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Replace the MAF/IAT sensor, then go to Step 21. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)
7		No	Go to the next step.
8	VERIFY CURRENT INPUT SIGNAL STATUS • Access the following PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) ― ECT ― MAF ― TP REL ― VSS • Are the PIDs normal? (See PCM INSPECTION [L3 Turbo].)	Yes	Go to the next step.
8		No	Inspect the malfunctioning part. • If there is any malfunction: ― Repair or replace the malfunctioning part according to the inspection results, then go to Step 21.
9	VERIFY CURRENT INPUT SIGNAL STATUS UNDER FREEZE FRAME DATA (MODE 2) CONDITION • Access the same PIDs as in Step 8 while simulating the FREEZE FRAME DATA (Mode 2) condition. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Are the PIDs normal? (See PCM INSPECTION [L3 Turbo].)	Yes	Go to the next step.
9		No	Inspect the malfunctioning part. • If there is any malfunction: ― Repair or replace the malfunctioning part according to the inspection results, then go to Step 21.
10	INSPECT A/F SENSOR • Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Go to the next step.
10		No	Go to Step 12.
11	INSPECT EXHAUST GAS LEAKAGE • Visually inspect for the exhaust gas leakage between the 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 21.
11		No	Replace the A/F sensor, then go to Step 21. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [L3 Turbo].)
12	INSPECT FUEL PRESSURE (HIGH-SIDE) • Access the FUEL_PRES PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 Turbo].)	Yes	Go to Step 17.
12		No	Go to the next step.
13	IDENTIFY CAUSE BY FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP • Is the vehicle accelerate performance normally?	Yes	Go to the next step.
13		No	Go to Step 15.
14	INSPECT FUEL PRESSURE SENSOR • Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Replace the fuel delivery pipe, then go to Step 21. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 Turbo].)
14		No	Go to Step 16.
15	INSPECT HIGH PRESSURE FUEL PUMP • Replace the high pressure fuel pump (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 Turbo].) • Access the FUEL_PRES PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 Turbo].)	Yes	High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction. • Go to Step 21.
15		No	Go to the next step.
16	INSPECT FUEL PRESSURE (LOW-SIDE) • Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. • Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [L3 Turbo].) • Is the low side fuel pressure within the specification?	Yes	Go to the next step.
16		No	Inspect for the following. • Fuel line restriction • Fuel filter clogging ― If there is no malfunction: • Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 Turbo].) ― If there is any malfunction: • Repair or replace the malfunctioning part according to the inspection results. Go to Step 21.
17	INSPECT LONG TERM FUEL TRIM • Access the LONGFT1 PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Compare the LONGFT1 PID with recorded FREEZE FRAME DATA (Mode 2) at Step 2. • Is the LONGFT1 PID value above FREEZE FRAME DATA (Mode 2) value?	Yes	Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION [L3 Turbo].) • If there is any malfunction: ― Replace the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [L3 Turbo].) Go to Step 21.
17		No	Go to the next step.
18	INSPECT ENGINE COMPRESSION • Inspect the engine compression. (See COMPRESSION INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 21.
18		No	Go to the next step.
19	INSPECT FUEL INJECTOR • Inspect the fuel injector. (See FUEL INJECTOR INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Replace the fuel injector, then go to Step 21. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 Turbo].)
19		No	Go to the next step.
20	INSPECT ECT SENSOR • Inspect the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Replace the ECT sensor, then go to the next step. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [L3 Turbo].)
20		No	Go to the next step.
21	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L3 Turbo].) • After warming up the engine, maintain the idle status for 1 min or more. • Perform the Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)
21		No	Go to the next step.
22	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 Turbo].)
22		No	DTC troubleshooting completed.