SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSUBARU2014FORESTER 2.5I, ENG CD FB25BA, STANDARD TRANSREPAIR AND DIAGNOSISENGINE MECHANICALLUBRICATION SYSTEMENGINE LUBRICATION SYSTEM (H4DO)OIL LEVEL SWITCHINSPECTIONINSPECTION WHILE LOW ENGINE OIL LEVEL WARNING LIGHT IS ON (NON-TURBO MODEL)
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard Trans

Inspection While Low Engine Oil Level Warning Light Is On (Non-Turbo Model)

2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Inspection While Low Engine Oil Level Warning Light Is On (Non-Turbo Model)
Step Check Yes No
1 CHECK ENGINE OIL LEVEL.  Is engine oil level normal? Go to step 2  . Replace engine oil or refill, and check again while the oil level is normal condition. < Ref. to REPLACEMENT , Engine Oil. > To turn off the low engine oil level warning light, install the spare fuse at the delivery mode fuse in the main fuse box. Then turn the ignition switch to ON (engine OFF) again to confirm the low engine oil level warning light turns off. Remove the spare fuse installed to finish.
NOTE: The engine oil level switch is normal if the low engine oil level warning light turns off with the delivery mode fuse inserted.
2 CHECK LAN SYSTEM.  Has a DTC of the LAN system been input? Perform the diagnosis according to DTC. Go to step 3  .
3 CHECK OIL LEVEL SWITCH CIRCUIT. 
  1. Turn the ignition switch to ON (engine OFF).
  2. Read the current data for engine in the Subaru Select Monitor to confirm the item for "Oil level switch". < Ref. to DISPLAY CURRENT ENGINE DATA , OPERATION, Subaru Select Monitor. >
 Is the "Oil level switch" signal displayed in Subaru Select Monitor HIGH? To turn off the low engine oil level warning light, install the spare fuse at the delivery mode fuse in the main fuse box. Then turn the ignition switch to ON (engine OFF) again to confirm the low engine oil level warning light turns off. Remove the spare fuse installed to finish.
NOTE: The engine oil level switch is normal if the low engine oil level warning light turns off with the delivery mode fuse inserted.
 Go to step 4  .
4 CHECK COMBINATION METER. 
Perform the self-diagnosis of combination meter to check if there are any faults in the combination meter. < Ref. to OPERATION , Combination Meter System. >		 Is combination meter OK? Go to step 5  . Replace the combination meter. < Ref. to REMOVAL , Combination Meter. >
5 CHECK SECURE CONNECTION OF CONNECTOR BETWEEN ENGINE HARNESS AND OIL LEVEL SWITCH.  Is there any insecure connection? Remedy the connection condition. Then, to turn off the low engine oil level warning light, install the spare fuse at the delivery mode fuse in the main fuse box. Then turn the ignition switch to ON (engine OFF) again to confirm the low engine oil level warning light turns off. Remove the spare fuse installed to finish.
NOTE: The engine oil level switch is normal if the low engine oil level warning light turns off with the delivery mode fuse inserted.
 Go to step 6  .
6 CHECK OIL LEVEL SWITCH. 
  1. Deliberately short circuits by connecting the engine harness connector terminal and chassis ground.
  2. Turn the ignition switch to ON (engine OFF).
  3. Read the current data for engine in the Subaru Select Monitor to confirm the item for "Oil level switch". < Ref. to DISPLAY CURRENT ENGINE DATA , OPERATION, Subaru Select Monitor. >

    Connector & terminal 

    (E130) No. 1 - Chassis ground: 

 Is the "Oil level switch" signal displayed in Subaru Select Monitor HIGH? Replace the oil level switch. < Ref. to REMOVAL , Oil Level Switch. > Go to step 7  .
7 CHECK SECURE CONNECTION OF CONNECTOR BETWEEN BULKHEAD HARNESS AND ENGINE HARNESS.  Is there any insecure connection? Remedy the connection condition. Then, to turn off the low engine oil level warning light, install the spare fuse at the delivery mode fuse in the main fuse box. Then turn the ignition switch to ON (engine OFF) again to confirm the low engine oil level warning light turns off. Remove the spare fuse installed to finish.
NOTE: The engine oil level switch is normal if the low engine oil level warning light turns off with the delivery mode fuse inserted.
 Go to step 8  .
8 CHECK ENGINE HARNESS. 
  1. Disconnect the connector on the oil level switch side for the engine harness.
  2. Disconnect the connector on the bulkhead harness side for the engine harness.
  3. Measure the resistance between connector terminals.

    Connector & terminal 

    (E2) No. 1 - (E130) No. 1: 

 Is the resistance less than 1 Ω? Go to step 9  . Repair or replace the open circuit of engine harness.
9 CHECK SECURE CONNECTION OF CONNECTOR BETWEEN ENGINE CONTROL MODULE (ECM) AND BULKHEAD HARNESS. 
Remove the glove box lid assembly. < Ref. to REMOVAL , Glove Box. >		 Is there any insecure connection? Remedy the connection condition. Then, to turn off the low engine oil level warning light, install the spare fuse at the delivery mode fuse in the main fuse box. Then turn the ignition switch to ON (engine OFF) again to confirm the low engine oil level warning light turns off. Remove the spare fuse installed to finish.
NOTE: The engine oil level switch is normal if the low engine oil level warning light turns off with the delivery mode fuse inserted.
 Go to step 10  .
10 CHECK BULKHEAD HARNESS. 
  1. Remove the glove box lid assembly. < Ref. to REMOVAL , Glove Box. >
  2. Disconnect the engine control module (ECM) side connector for the bulkhead harness.
  3. Disconnect the engine harness connectors from the bulkhead harness.
  4. Measure the resistance between connector terminals.

    Connector & terminal 

    (B136) No. 24 - (B21) No. 1: 

 Is the resistance less than 1 Ω? Replace the engine control module (ECM). < Ref. to REMOVAL , Engine Control Module (ECM). > Repair or replace the open circuit of the bulkhead harness.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.