P2603

FREIGHTLINER, MERCEDES-BENZ

Problem: Vehicle fails smog test Cause In the event the Engine Control Module (CDI) detects a fault with the Water Pump Short Circuit to Battery diagnostic, Fault Code P260312 and/or P260315 may set and prevent the readiness monitor from running. Even following a successful repair and/or clearing the Fault Code(s), the readiness…

FREIGHTLINER, MERCEDES-BENZ

SMOG Test will not complete successfully. NOTE: Customers may come to dealership as instructed by ISP (Independent Service Provider) based on instructions from a TSB (Technical Service Bulletin). Access to the TSBs can be found via https://www.obdclearinghouse.com/ or by viewing the TSBs in the attachments area of this LI. Cause…