Engine-Codes - Saturn - P0604 SATURN

P0604 SATURN - Control Module Random Access Memory

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0604 SATURN Possible Causes

  • Faulty Powertrain Control Module (PCM)
  • PCM harness is open or shorted
  • PCM circuit poor electrical connection
  • PCM Programming

How is the P0604 SATURN code repair?

Start by checking 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 Powertrain Control Module (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 PCM.

What is the cost to diagnose the P0604 SATURN code

Labor: 1.0

The cost to diagnose the P0604 SATURN code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

Indicates the Powertrain Control Module (PCM) has experienced an internal memory fault.

Possible Symptoms

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

P0604 SATURN Meaning

The Powertrain Control Module (PCM) performs an internal self-test on it's Random Access Memory (RAM) or read/write memory. If this self-test fails, the P0604 code will set.

More Information

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