DTC P250C:00 [SKYACTIV-D 1.5]

id0102q2787300

DTC P250C:00

Engine oil level sensor power supply circuit malfunction

DETECTION CONDITION

•  When the following conditions are met, a supply voltage error signal from the engine oil level sensor continues to be received for a specified time.

MONITORING CONDITIONS

―  All of the following conditions is met for 1 min.

•  Battery voltage: 10—16 V

•  Communication error between oil level sensor and PCM DTC U1100:00 not detected.

Diagnostic support note

•  This is an intermittent monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA is not available.

•  Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

•  Engine oil level sensor connector or terminals malfunction

•  Short to ground or open circuit in engine oil level sensor power supply circuit

―  Short to ground in wiring harness between ENGINE3 15 A fuse and engine oil level sensor terminal A

―  ENGINE3 15 A fuse malfunction

―  Open circuit in wiring harness between main relay terminal D and engine oil level sensor terminal A

•  PCM connector or terminals malfunction

•  Short to ground in wiring harness between engine oil level sensor terminal C and PCM terminal 1Q

•  Short to power supply in wiring harness between engine oil level sensor terminal C and PCM terminal 1Q

•  Open circuit in wiring harness between engine oil level sensor terminal C and PCM terminal 1Q

•  Engine oil level sensor malfunction

•  PCM malfunction

DTC P250C:00	Engine oil level sensor power supply circuit malfunction
DETECTION CONDITION	• When the following conditions are met, a supply voltage error signal from the engine oil level sensor continues to be received for a specified time. MONITORING CONDITIONS ― All of the following conditions is met for 1 min. • Battery voltage: 10—16 V • Communication error between oil level sensor and PCM DTC U1100:00 not detected. Diagnostic support note • This is an intermittent monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	• Engine oil level sensor connector or terminals malfunction • Short to ground or open circuit in engine oil level sensor power supply circuit ― Short to ground in wiring harness between ENGINE3 15 A fuse and engine oil level sensor terminal A ― ENGINE3 15 A fuse malfunction ― Open circuit in wiring harness between main relay terminal D and engine oil level sensor terminal A • PCM connector or terminals malfunction • Short to ground in wiring harness between engine oil level sensor terminal C and PCM terminal 1Q • Short to power supply in wiring harness between engine oil level sensor terminal C and PCM terminal 1Q • Open circuit in wiring harness between engine oil level sensor terminal C and PCM terminal 1Q • Engine oil level sensor malfunction • PCM malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the snapshot data on the repair order.	—	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	INSPECT ENGINE OIL LEVEL SENSOR CONNECTOR CONDITION • Switch the ignition off. • Disconnect the engine oil level sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 9.
3		No	Go to the next step.
4	INSPECT ENGINE OIL LEVEL SENSOR POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Verify that the engine oil level sensor connector is disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the PCM detecting an open circuit. • Measure the voltage at the engine oil level sensor terminal A (wiring harness-side). • Is the voltage B+?	Yes	Go to the next step.
4		No	Inspect the ENGINE3 15 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE3 15 A fuse and engine oil level sensor terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. • Replace the fuse. • If the fuse is damaged: ― Replace the fuse. • If the fuse is normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between main relay terminal D and engine oil level sensor terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 9.
5	INSPECT PCM CONNECTOR CONDITION • Switch the ignition off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 9.
5		No	Go to the next step.
6	INSPECT ENGINE OIL LEVEL SENSOR LIN COMMUNICTION CIRCUIT FOR SHORT TO GROUND • Verify that the engine oil level sensor and PCM connectors are disconnected. • Inspect for continuity between the engine oil level sensor terminal C (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between engine oil level sensor terminal C and PCM terminal 1Q. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 9.
6		No	Go to the next step.
7	INSPECT ENGINE OIL LEVEL SENSOR LIN COMMUNICTION CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the engine oil level sensor and PCM connectors are disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the PCM detecting an open circuit. • Measure the voltage between engine oil level sensor terminal C (wiring harness-side) and ground. • Is the voltage 0 V?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between engine oil level sensor terminal C and PCM terminal 1Q. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 9.
7		No	Go to the next step.
8	INSPECT ENGINE OIL LEVEL SENSOR LIN COMMUNICTION CIRCUIT FOR OPEN CIRCUIT • Verify that the engine oil level sensor and PCM connectors are disconnected. • Switch the ignition off. • Inspect for continuity between engine oil level sensor terminal C (wiring harness-side) and PCM terminal 1Q(wiring harness-side). • Is there continuity?	Yes	Replace the engine oil level sensor, then go to the next step. (See ENGINE OIL LEVEL SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
8		No	Refer to the wiring diagram and verify whether or not there is a common connector between engine oil level sensor terminal C and PCM terminal 1Q. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to the next step.
9	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [SKYACTIV-D 1.5].) • Perform the DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 1.5].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].) Go to the next step.
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [SKYACTIV-D 1.5].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-D 1.5].)
10		No	DTC troubleshooting completed.