Symptom Tree
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Electronic fault codes are active |
For instructions on how to read active fault codes, refer to Procedure 101-007 (Electronic Controlled Fuel System) in Section 1. If fault codes are active, contact a Cummins Authorized Repair Facility. |
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Lubricating oil level is above or below specification |
Check the oil level. Add or drain oil, if necessary. Refer to Procedure 007-043 (Lubricating Oil Level) in Section 3. |
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Lubricating oil leak (external) |
Inspect the engine for external oil leaks. Tighten the capscrews, pipe plugs, and fittings. Replace gaskets, if necessary. Refer to Procedure 018-006 (Engine Torque Values) in Section V. |
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Lubricating oil pressure switch, gauge, or sensor is malfunctioning or is not in the correct location |
Check the oil pressure switch, gauge, or sensor for correct operation and location. Refer to the OEM service manual. |
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Lubricating oil does not meet specifications for operating conditions |
Change the oil and filters. Refer to Procedure 007-013 (Lubricating Oil Filters – Spin-on) in Section 4. Use the oil type recommended in Section V. |
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Lubricating oil is contaminated with coolant or fuel |
Contact a Cummins Authorized Repair Facility. |
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Lubricating oil filter is plugged |
Change the oil and filter. Refer to Procedure 007-013 (Lubricating Oil Filters – Spin-on) in Section 4. Review the oil change interval. |
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| Contact a Cummins Authorized Repair Facility |
