Trouble code from my ultra-gauge but no lights are on?
Thread Starter
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Three Wheeling
Joined: Oct 2011
Posts: 62
Likes: 1
From: Chicago
Trouble code from my ultra-gauge but no lights are on?
I plugged my ultra gauge in, and I'm getting a trouble code P1590.
what's odd is that none of the dash lights are illuminated?
when I clear the code, it just comes back immediately. Any ideas?
what's odd is that none of the dash lights are illuminated?
when I clear the code, it just comes back immediately. Any ideas?
Super Moderator
Joined: Jan 2011
Posts: 16,322
Likes: 88
From: Savannah Georgia
1590 is rough road detection out of range:
travelling on the 'rough road'
see these pages from RAVE
Rough road signal
When the vehicle travels across rough terrain, or on rough roads instability becomes evident in the drive train. The
ECM could interpret these vibrations as a 'false misfire'. To counteract this 'false misfire' the SLABS ECU generates
a rough road signal, sends it to the ECM so that the ECM can suspend misfire detection for as long as the vehicle is
When the vehicle travels across rough terrain, or on rough roads instability becomes evident in the drive train. The
ECM could interpret these vibrations as a 'false misfire'. To counteract this 'false misfire' the SLABS ECU generates
a rough road signal, sends it to the ECM so that the ECM can suspend misfire detection for as long as the vehicle is
travelling on the 'rough road'
see these pages from RAVE
Thread Starter
|
Three Wheeling
Joined: Oct 2011
Posts: 62
Likes: 1
From: Chicago
1590 is rough road detection out of range:
travelling on the 'rough road'
see these pages from RAVE
Rough road signal
When the vehicle travels across rough terrain, or on rough roads instability becomes evident in the drive train. The
ECM could interpret these vibrations as a 'false misfire'. To counteract this 'false misfire' the SLABS ECU generates
a rough road signal, sends it to the ECM so that the ECM can suspend misfire detection for as long as the vehicle is
When the vehicle travels across rough terrain, or on rough roads instability becomes evident in the drive train. The
ECM could interpret these vibrations as a 'false misfire'. To counteract this 'false misfire' the SLABS ECU generates
a rough road signal, sends it to the ECM so that the ECM can suspend misfire detection for as long as the vehicle is
travelling on the 'rough road'
see these pages from RAVE
EDIT: I just went and checked - when I start it, the check engine light cycles (just like the Brake light, seatbelt, etc...), but no HDC light or ABS light.
Last edited by 01d2Jeff; Nov 18, 2011 at 01:20 PM.
What these guys said, this is so common with DII's to have those bulbs removed (they are actually LED's and they break them so they dont work anymore) that I try to ask people if those lights come on when they are test driving a truck.
