P0603 BMW - ECM Self Check Fault

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
Comments  |  Add Comment

P0603 BMW Possible Causes

  • Loose or poor battery terminal connection
  • Low battery charge
  • ECM power supply circuit is open or shorted
  • ECM Programing
  • Faulty ECM

First diagnose P0603 BMW code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

P0603 BMW Tech Notes

Start by charging the vehicles battery and clean terminal, once the battery is charged and the terminals are clean and secure, erase code. If the code comes back ON you may have to reprogram or replaced ECM

Cost of diagnosing the P0603 BMW code

    Labor: 1.0

    The cost of diagnosing the P0603 BMW code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the P0603 BMW code detected?

Indicates the ECM has experienced an internal memory fault.

P0603 BMW Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine may not start

P0603 Bmw Description

Battery voltage is supplied to the ECM even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc.
OBDII Code P0603 Bmw - ECM Self Check Fault - AutoCodes.com

P0603 BMW More Information

Need more information on how to fix the P0603 BMW code?
Get Access to Factory Service Manuals

Need more help?

Get the P0603 Bmw code diagnosed by a professional: Find a repair shop in your area

Related Information

P0603 BMW Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0603 Bmw code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧