Code P1682
Thread Starter
Teching In
Joined: Feb 2011
Posts: 45
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From: Sydney Australia
Code P1682 I have a 2008 LS3 running an E38 ECM in a custom vehicle. The ECM came out of the vehicle I got the engine out of.
Occasionally it will throw a P1682 code when starting and even more rarely whilst driving.
The result of the code is the DBW loses all function and we coast to a stop.
Remove the code and drive on.
The other day it did it twice in 2 miles and I'm no longer confident to drive in busy traffic for fear it will chuck the code and die.
I know what the code is for and I've tried all sorts of fixes until I decided to look at the ECM plugs.
From what I can see pin 19 on the Black plug should have a pink wire feeding 12 volts ign switched power.
My loom doesn't have that particular wire.
The loom was modified by an alleged expert (yeah?) and I've had a few other problems with it.
My question is (finally!) should I be applying/installing 12volts ign power to pin 19?
I have a spare ECM with the tune and VIN in it so if I blow one up it isn't the end of the world.
All and any help most appreciated.
Occasionally it will throw a P1682 code when starting and even more rarely whilst driving.
The result of the code is the DBW loses all function and we coast to a stop.
Remove the code and drive on.
The other day it did it twice in 2 miles and I'm no longer confident to drive in busy traffic for fear it will chuck the code and die.
I know what the code is for and I've tried all sorts of fixes until I decided to look at the ECM plugs.
From what I can see pin 19 on the Black plug should have a pink wire feeding 12 volts ign switched power.
My loom doesn't have that particular wire.
The loom was modified by an alleged expert (yeah?) and I've had a few other problems with it.
My question is (finally!) should I be applying/installing 12volts ign power to pin 19?
I have a spare ECM with the tune and VIN in it so if I blow one up it isn't the end of the world.
All and any help most appreciated.
