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Powertrain

P2603

Code meaning and manufacturer information

OBD-II / DTC

Reference meaning

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Manufacturer communications

2

Original wording in English

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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…

Check vehicle applicability

20

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

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MakeModelModel year
FreightlinerSPRINTER 1500 ↗2016
FreightlinerSPRINTER 1500 ↗2015
FreightlinerSPRINTER 2500 ↗2016
FreightlinerSPRINTER 2500 ↗2015
FreightlinerSPRINTER 2500 ↗2014
FreightlinerSPRINTER 3500 ↗2016
FreightlinerSPRINTER 3500 ↗2015
FreightlinerSPRINTER 3500 ↗2014

Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.