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P1604 Dodge Code - PCM Internal Dual-Port RAM Read/Write Integrity Failure

- Code Popularity: 17,893 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1604 Dodge?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Powertrain Control Module (PCM) fused ignition switch circuit
  • Faulty PCM
  • PCM harness is open or shorted
  • PCM circuit poor electrical connection
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How to Fix the DTC P1604 Dodge?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1604 Dodge code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1604 Dodge Description

With the ignition off, on, and run/start the Powertrain Control Module (PCM) monitors the communication with the Ignition Switch Output circuit. The Diagnostic Trouble Code (DTC) will set when the PCM detects an intermittent open circuit between the PCM connector and the Fused Ignition Switch Output circuit.

OBDII Code P1604 Dodge - PCM Internal Dual-Port RAM Read/Write Integrity Failure - AutoCodes.com
P1604 Dodge Code - PCM Internal Dual-Port RAM Read/Write Integrity Failure

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