Chevrolet P1682: Ignition 1 Switch Circuit 2

Is your scanner showing Chevrolet P1682?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Chevrolet P1682: Ignition 1 Switch Circuit 2

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$130-$400
Can I Still Drive?
:
Yes (Short-term only)

What Does The Chevrolet P1682 Code Mean?

The powertrain relay is commanded on. Ignition 1 Signal voltage is greater than 5.5 V. DTC P1682 runs continuously when the above conditions are met.

The ECM detects that the voltage level difference is greater than 3 V between the 2 ignition voltage circuits for less than 1 s.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

  • Chevrolet Volt Hybrid DTC – OBDG01 HYBRID Diagnostics Document, page 180.
  • GM, 2013, Service Bullettin – Prior To Any Circuit Testing.
  • GM, 2014, Service Bullettin – Intermittent Crank No Start With DTC P1682.
  • GM, 2014, Service Bullettin – Service Engine Soon MIL With DTC P1682 – Battery Draw – No Start Due To Non-GM Accessories Aftermarket Product.
  • GM, 2014, Service Bullettin – Diagnostic Tip – Service Engine Soon MIL With DTC P1682 – Battery Draw – No Start.
  • GM, 2015, Service Bullettin – Intermittent Crank/No Start with DTC P1682 Set.
  • GM, 2015, Service Bullettin – Floor Wet Under Carpet/Engine Continues to Run with Key Off/Possible No Crank/No Start/Communication
    Loss/Various Electrical Concerns (Seal Seam).
  • GM, 2015, Service Bullettin – Intermittent Crank No Start With DTC P1682.
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