P2603 on the 2014 Freightliner Sprinter
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| LI07.16-N-075574 | 2023-01-05. Service bulletin. 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 monitor remains deactivated and self-healing is not possible. This deactivation may prevent the vehicle from passing state emissions inspection and SMOG Test and is only resolvable by installing new engine control unit software. Remedy 1. Perform XENTRY Quick Test. 2. Check for the presence of Fault Code P260312 and/or P260315 in the CDI control module. 3. If relevant Fault Codes are present, resolve fault using standard dealer procedures. Once fault is resolved, proceed to step 5. 4. If no relevant Fault Codes are present, or the fault has been previously repaired and Fault Codes erased, proceed to step 5. |
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| LI07.16-N-075574 | 2022-12-05. Service bulletin. 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 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 monitor remains deactivated and self-healing is not possible. This deactivation may prevent the vehicle from passing state emissions inspection and SMOG Test and is only resolvable by installing new engine control unit software. Remedy 1. Perform XENTRY Quick Test. 2. Check for the presence of Fault Code P260312 and/or P260315 in the CDI control module. 3. If relevant Fault Codes are present, resolve fault using standard dealer procedures. 4. If no relevant Fault Codes are present, or the fault has been repaired and Fault Codes erased, proceed to check and install new Engine Control Unit SW |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.