For Shop Owners

P1682 CHEVROLET - Ignition 1 Switch Circuit 2

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3 What does this mean?

Possible causes

  • Faulty ignition switch
  • Ignition Switch harness is open or shorted
  • Ignition Switch circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
What does this mean?

When is the code detected?

The ECM has detected a voltage deifference between two circuits

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Possible no crank or start

P1682 CHEVROLET Description

There are 2 ignition 1 voltage circuits supplied to the Engine Control Module (ECM). The first ignition circuit is provided by the powertrain relay, through a fuse. This ignition 1 voltage circuit supplies power to all the internal ECM circuits associated with the throttle actuator control (TAC) operation. The second ignition 1 voltage circuit is supplied by the run/crank relay through a fuse, and is used to power the remaining internal ECM circuits. If the ECM detects a voltage difference between the 2 ignition 1 voltage circuits, DTC P1682 will set.
OBDII Code P1682 Chevrolet - Ignition 1 Switch Circuit 2 -

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P1682 CHEVROLET 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 P1682 Chevrolet code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 2
1=Easy 2=Moderate 3=Hard

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Posted and Edit by 09-09-2016

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