For Shop Owners

P1684 DODGE - Battery Power To Module Disconnected

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Battery was recently disconnected
  • Transmission Control Module (TCM) was replaced or disconnected
  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module (TCM) harness is open or shorted
  • Transmission Control Module (TCM) circuit poor electrical connection
What does this mean?

Tech notes

If other codes are present, check and repair other codes first. Make sure the battery charge is OK and the battery connectors are firmly secure.
What does this mean?

When is the code detected?

This code is set whenever Transmission Control Module (TCM) is disconnected from battery power B+ or ground. It will also be set during the DRB III Quick Battery Disconnect procedure.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
OBDII Code P1684 Dodge - Battery Power To Module Disconnected -

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P1684 DODGE Comments

Help us improve 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 P1684 Dodge code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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Posted and Edit by 09-09-2016

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