DTC P2195:00 [ZJ, ZY]

id0102c0709300

DTC P2195:00

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 output current is 1.2 A or more for 25 s, the PCM determines that the A/F sensor signal remains lean.

MONITORING CONDITIONS

―  ECT: 70 °C {158 °F} or more

―  Engine speed: 1,000—3,200 rpm

―  MAF amount: 6—80 g/s {0.80—10.58 lb/min}

―  Target A/F feedback system status: feedback control

Diagnostic support note

•  This is an intermittent monitor (A/F sensor, HO2S).

•  The MIL illuminates if the PCM detects the above malfunctioning 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 PCM detects the above malfunction conditions during first drive cycle.

•  FREEZE FRAME DATA is available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  A/F sensor heater malfunction

•  A/F sensor malfunction

―  A/F sensor looseness

―  Leakage exhaust gas

―  A/F sensor malfunction

•  MAF sensor malfunction

•  Air suction in intake-air system

•  Improper operation of fuel injector

•  Fuel supply system or improper fuel line pressure

―  Pressure regulator (built-in fuel pump unit) malfunction

―  Fuel pump unit malfunction

―  Fuel filter clogged or restricted

―  Fuel leakage on fuel line from fuel distributor and fuel pump unit

•  PCM malfunction

DTC P2195:00	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 output current is 1.2 A or more for 25 s, the PCM determines that the A/F sensor signal remains lean. MONITORING CONDITIONS ― ECT: 70 °C {158 °F} or more ― Engine speed: 1,000—3,200 rpm ― MAF amount: 6—80 g/s {0.80—10.58 lb/min} ― Target A/F feedback system status: feedback control Diagnostic support note • This is an intermittent monitor (A/F sensor, HO2S). • The MIL illuminates if the PCM detects the above malfunctioning 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 PCM detects the above malfunction conditions during first drive cycle. • FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• A/F sensor heater malfunction • A/F sensor malfunction ― A/F sensor looseness ― Leakage exhaust gas ― A/F sensor malfunction • MAF sensor malfunction • Air suction in intake-air system • Improper operation of fuel injector • Fuel supply system or improper fuel line pressure ― Pressure regulator (built-in fuel pump unit) malfunction ― Fuel pump unit malfunction ― Fuel filter clogged or restricted ― Fuel leakage on fuel line from fuel distributor and fuel pump unit • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED • Have the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS (A/F sensor, HO2S related) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
2	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.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE AND STORED DTC • Turn the ignition switch off, then to the ON position (engine off). • Verify the related PENDING CODE and stored DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [ZJ, ZY].) • Is the DTC P2177:00 or P2187:00 also present?	Yes	Go to the applicable DTC inspection. (See DTC P2177:00 [ZJ, ZY].) (See DTC P2187:00 [ZJ, ZY].)
3		No	Go to the next step.
4	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is the DTC P2195:00 on FREEZE FRAME DATA?	Yes	Go to the next step.
4		No	Go to the troubleshooting procedures for DTC on FREEZE FRAME DATA. (See DTC TABLE [ZJ, ZY].)
5	INSPECT A/F SENSOR HEATER • Inspect the A/F sensor heater. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [ZJ, ZY].) • Is there any malfunction?	Yes	Replace the A/F sensor, then go to Step 14. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [ZJ, ZY].)
5		No	Go to the next step.
6	INSPECT A/F SENSOR • Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [ZJ, ZY].) • Is there any malfunction?	Yes	Go to the next step.
6		No	Go to Step 9.
7	INSPECT INSTALLATION OF A/F SENSOR • Inspect if the A/F sensor is loosely installed. • Is the A/F sensor installed securely?	Yes	Go to the next step.
7		No	Retighten the A/F sensor, then go to Step 14. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [ZJ, ZY].)
8	INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM • Visually inspect if there is exhaust gas leakage between the exhaust manifold and A/F sensor. • Is there gas leakage?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 14.
8		No	Replace the A/F sensor, then go to Step 14. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [ZJ, ZY].)
9	VERIFY CURRENT INPUT SIGNAL STATUS OF MAF SENSOR • Connect the M-MDS to the DLC-2. • Start the engine. • Perform the PID/DATA Monitor and Record Procedure and access the MAF PID. (See ON-BOARD DIAGNOSTIC TEST [ZJ, ZY].) • Verify that the MAF PID changes quickly according to race the engine speed. • Is the PID normal?	Yes	Go to Step 11.
9		No	Go to the next step.
10	INSPECT INTAKE-AIR SYSTEM FOR EXCESSIVE AIR SUCTION • Visually inspect the hoses in intake-air system for looseness, cracks or damages. 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 14.
10		No	Replace the MAF/IAT sensor, then go to Step 14. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION [ZJ, ZY].)
11	INSPECT FUEL INJECTOR OPERATION • Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [ZJ, ZY].) • Does the fuel injector work properly?	Yes	Go to the next step.
11		No	Repair or replace the malfunctioning part according to the inspection results, then go to Step 14.
12	INSPECT FUEL LINE PRESSURE • Perform the ”FUEL LINE PRESSURE INSPECTION”. (See FUEL LINE PRESSURE INSPECTION [ZJ, ZY].) • Is the fuel line pressure normal?	Yes	Go to Step 14.
12		No	If the fuel pressure is too high: • Replace the fuel pump unit, then go to Step 14. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [ZJ, ZY].) If the fuel pressure is low: • Go to the next step.
13	INSPECT FUEL SYSTEM FOR FUEL LEAKAGE • Visually inspect the fuel leakage in the fuel system. • Is there fuel leakage?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to the next step.
13		No	Inspect the fuel filters for the foreign material or stain inside the fuel filter (low-pressure side). • If the foreign material or stain is found inside the fuel filter (low-pressure side): ― Clean the fuel tank and filter. • If normal: ― Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [ZJ, ZY].) Go to the next step.
14	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 [ZJ, ZY].) • Drive the vehicle in the MONITORING CONDITIONS. • Perform the Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [ZJ, ZY].) • Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [ZJ, ZY].)
14		No	Go to the next step.
15	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [ZJ, ZY].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [ZJ, ZY].)
15		No	DTC troubleshooting completed.