Cummins/Onan 4ISBe Engine Engine
The Cummins/Onan 4ISBe is an engine. It powers generator sets from Cummins/Onan, including the C100 and C200. It holds 26.5 L (7.0 gal) of oil and 28.6 L (7.6 gal) of coolant.
Also known as: Cummins 4ISBe
Engine specifications
| Oil capacity | 26.5 L |
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| Coolant capacity | 28.6 L |
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Generator sets powered by this engine
2Common problems
2- Unknown J1939 Fault 251
Cause: Can be caused by battery disconnection/isolation without a run data save operation. - Flash-out of Fault Codes
Fix: 1. The diagnostic mode key switch must be in the On (I) position to flash out the fault codes. 2. In the diagnostic mode: a) With no active faults, the Warning and Stop lamps will be illuminated without flashing OR b) With active faults, the ECM will begin to flash out codes by first turning on the Warning lamp. 3. The Warning lamp will then turn off and the ECM will begin flashing the Stop lamp in sequence to represent the active fault code number. 4. As the fault code is flashed, short pauses will occur to indicate completion of each digit. The Warning lamp will illuminate to indicate the beginning of a fault code. 5. The ECM will continue to flash a fault until the operator uses the Fault increment (↑) or decrement (↓) rocker switch to change to a new fault.
Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan 4ISBe.
Common questions
What is the oil capacity of the Cummins/Onan 4ISBe?
The Cummins/Onan 4ISBe engine has an oil capacity of 26.5 liters.
Which generators use the Cummins/Onan 4ISBe engine?
The Cummins/Onan 4ISBe powers 2 generator set(s), including Cummins/Onan C100, Cummins/Onan C200.
What is a common problem with the Cummins/Onan 4ISBe engine?
A commonly reported issue on generators using the Cummins/Onan 4ISBe is: Unknown J1939 Fault. Cause: Can be caused by battery disconnection/isolation without a run data save operation..