B5.9G, B5.9LPG, B Gas Plus, B LPG Plus, and B Gas International Engines – Alternator Overcharging

Battery cell is damaged (open circuit)

Check the condition of the batteries. Replace the batteries, if necessary. Refer to the OEM service manual.

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.