DTC P1685 [13B-MSP]

id0102g1781100

DTC P1685

Metering oil pump oil pressure sensor–oil pressure is high

DETECTION CONDITION

•  It is that the oil pressure at the metering oil pump system is more than 180 kPa {1.84 kgf/cm², 26.1 psi} continues for 10 s, after specified period passes after the engine starts.

Diagnostic support note

•  This is a continuous monitor (Other).

•  The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.

•  FREEZE FRAME DATA is available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  Oil pressure sensor malfunction (abnormal characteristic)

•  Oil pump malfunction (relief valve stuck close)

•  Metering oil pump drain passage clogged

•  OCV malfunction (stuck open)

•  PCM malfunction

DTC P1685	Metering oil pump oil pressure sensor–oil pressure is high
DETECTION CONDITION	• It is that the oil pressure at the metering oil pump system is more than 180 kPa {1.84 kgf/cm², 26.1 psi} continues for 10 s, after specified period passes after the engine starts. Diagnostic support note • This is a continuous monitor (Other). • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. • FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Oil pressure sensor malfunction (abnormal characteristic) • Oil pump malfunction (relief valve stuck close) • Metering oil pump drain passage clogged • OCV malfunction (stuck open) • 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.
1		No	Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILBAILITY • Verify related Service information availability. • Is any related Service information available?	Yes	Perform repair or diagnosis according to th 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 OR STORED DTC • Turn the ignition switch off, then to the ON position (engine off). • Verify the related PENDING CODE or stored DTCs. • Are other DTCs present?	Yes	Go to the appropriate DTC inspection. (See DTC TABLE [13B-MSP].)
3		No	Go to the next step.
4	VERIFY THAT METERING OIL PUMP SYSTEM RELATED DTC • Turn the ignition switch off, then to the ON position (engine off). • Verify the related PENDING CODE or stored DTCs. • Is the DTC P0522, P0523, P1680, P1681, P1682, P1683, P1686 or P1687 present?	Yes	Go to the appropriate DTC inspection. (See DTC TABLE [13B-MSP].)
4		No	Go to the next step.
5	VERIFY WHETHER MALFUNCTION IS IN OIL PRESSURE SENSOR ABNORMAL CHARACTER OR ELSEWHERE • Monitor the PID MOP_P_ACT using the M-MDS PID/data monitor function while the ignition switch is ON (engine off). (See ON-BOARD DIAGNOSTIC TEST [13B-MSP].) • Is the PID MOP_P_ACT value more than 0 kPa?	Yes	Replace the oil pressure sensor, then go to Step 9. (See OIL PRESSURE SENSOR REMOVAL/INSTALLATION [13B-MSP].)
5		No	Go to the next step.
6	INSPECT OIL PRESSURE • Perform the “OIL PRESSURE INSPECTION”. (See OIL PRESSURE INSPECTION [13B-MSP].) • Is the oil pressure within the specified?	Yes	Go to the next step.
6		No	Replace the oil pump, then go to Step 9.
7	VERIFY THAT METERING OIL PUMP DRAIN PASSAGE • Verify that the metering oil pump drain passage for clogged. • Is there a clog in the oil drain passage?	Yes	Repair or replace the malfunctioning part, then go to Step 9.
7		No	Go to the next step.
8	INSPECT OCV • Inspect the OCV. (See OIL CONTROL VALVE (OCV) INSPECTION [13B-MSP].) • Is there any malfunction?	Yes	Replace the OCV, then go to the next step. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [13B-MSP].)
8		No	Go to the next step.
9	VERIFY TROUBLESHOOTING OF DTC P1685 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. • Start the engine and warm it up completely. • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [13B-MSP].)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [13B-MSP].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [13B-MSP].)
10		No	DTC troubleshooting completed.