P0604 BMW - ECM Self Check Fault

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
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P0604 BMW Possible Causes

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

How do I fix code P0604 BMW

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 connector's pins.

Tech Notes

Check the ECM/PCM fuse, if fuse is OK try erasing the code first and if the code comes back you may have to reprogram or replaced the ECM.

Cost of diagnosing the P0604 BMW code

Labor: 1.0

The cost of diagnosing the P0604 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 code detected?

Indicates the ECM has experienced an internal memory fault.

Possible Symptoms

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

P0604 Bmw Description

The ECM continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the ECM is functioning properly. If any malfunction is detected, the ECM will set the code and illuminate the engine light.
OBDII Code P0604 Bmw - ECM Self Check Fault - AutoCodes.com

P0604 BMW More Information

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