Question about 2007 Chevrolet Silverado 1500

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P1682 Check engine code p1682. Part needed?

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  • Chevrolet Master
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Parts store can tell what the code is or dealer..

Posted on Jan 23, 2013

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Posted on Jan 02, 2017

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My 2007 GMC envoy Denali after it has been running for a few minutes the engine dies either sitting there or while driving, the engine will turn over but will not fire. P1682 code is confirmed


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 ignition switch 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.

Get a subscription to alldatadiy.com and print out the troubleshooting steps. You've already wasted more than the cost of a good manual by replacing a good switch.

Aug 07, 2017 | GMC Cars & Trucks

1 Answer

Chevy code P1682?


P1682 Chevrolet - Ignition 1 Switch Circuit 2

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? 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

Read more: http://engine-codes.com/p1682_chevrolet.html#ixzz3dr4CYBUT

Jun 22, 2015 | Cars & Trucks

1 Answer

Am having trouble with my chevolet colorado 3.7 lt


Possible causes
- Faulty ignition switch
- Ignition Switch harness is open or shorted
- Ignition Switch circuit poor electrical connection
- Faulty Engine Control Module (ECM)
help.jpg 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.


Read more: http://engine-codes.com/p1682_chevrolet.html#ixzz3Djm8K11C

Sep 19, 2014 | Cars & Trucks

1 Answer

Po1682


Here is the definition for code 1682.
Problem could be with the ignition switch, the harness, or the computer.

P1682 CHEVROLET Description There are 2 ignition 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
Read more: http://engine-codes.com/p1682_chevrolet.html#ixzz25wBbBqGe

Sep 07, 2012 | 2006 GMC Envoy

1 Answer

What does the check engine light mean when it is on and says failed ignition?


Low battery voltage during cranking (less than 10 volts) Check your battery health, and/or associated leads to battery.

Jun 05, 2012 | 2009 Chevrolet Cobalt

1 Answer

Diagnostic code p1682


Code p1682-A/T FI signal A high output.
It's a C code fault.
I recommend you clear it.

May 24, 2012 | 2001 Dodge Caravan

4 Answers

1998 jeep cherokee sport- i get a code p1682.


P1682 - Charging system voltage to low.

Nov 23, 2009 | 1998 Jeep Cherokee

1 Answer

Error codes


P0523 means the Oil pressure voltage to high. Your Oil pressure sensor may need to be replaced. P1682 means your charging system is to low. Your voltage regulator may be going bad or the whole alternator. p1693 means a Diagnostic trouble code (DTC) has been detected in the ECM or PCM which is related to the above DTC P0XXX codes. Good luck and hope this helps. Keep me posted, be glad to help

Jun 11, 2009 | 1999 Dodge Ram

1 Answer

Code p1682


quick test... start the vehicle and unhook the battery. if it quits... alternator... if it keeps running battery...
judging from your question you are already aware of this but that code is
P1682 Charging System Voltage Too Low (Chrysler, Jeep)

Jan 03, 2009 | 2001 Dodge Dakota

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