BARRIER 8J9498 - Caterpillar

Table 1
Diagnostic Trouble Codes for Oil Level Is Low
J1939 Code CDL Code Code Description
(code descriptions may vary) Comments
98-18 E171 (2) Engine Oil Level : Low - moderate severity (2) The engine oil level has dropped below the level of the switch for the time specified in the ECM.
The code is logged.
The engine is derated.
98-1 E171 (3) Engine Oil Level : Low - most severe (3) The engine oil level has dropped below the level of the switch for the time specified in the ECM.
The code is logged.
The engine is derated and may stop. Probable Causes
Low engine oil level
Problem with an electrical connection or with the wiringRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 2
Troubleshooting Test Steps Values Results
1. Low Engine Oil Level
A. Check the engine oil level. Refer to the Operation and Maintenance Manual, "Engine Oil Level - Check".
Engine oil level
Result: The engine oil level is low.
Repair: Add engine oil, as necessary.
If engine oil consumption is considered excessive, refer to Troubleshooting, "Oil Consumption Is Excessive".
Proceed to Test Step 2.
2. Electrical Connections or Wiring
A. Inspect the electrical connectors and all the wiring for the switch. Refer to Troubleshooting, "Electrical Connectors - Inspect" and refer to the electrical Schematic.
Electrical connectors and wiring
Result: There is a fault in an electrical connection or the wiring.
Repair: Repair or replace the faulty item.
Result: The electrical connections and wiring are OK.
Proceed to Test Step 3.
3. Test the Oil Level Switch
Note: The engine oil level switch must be closed in order for the engine to operate. The switch is normally open. The switch must be submerged in fluid to become closed.
A. Disconnect the switch and remove the switch.
B. Connect an ohmmeter to the switch terminals and measure the continuity. The correct continuity for the normally open switch is greater than 20,000 Ohms.
C. Continue to monitor the ohmmeter and submerge the switch in water. The correct continuity for the closed switch is less than 5 Ohms.
Oil level switch
Result: The correct results are not obtained or if the switch does not close.
Repair: Replace the switch.
Result: The correct results are obtained and the switch closes correctly.
Contact the Dealer Solutions Network (DSN).