ABS light but no codes*fixed*

Moostang · 06-30-2008, 05:32 PM

What would cause the ABS light to come on and not turn off, but the truck is not throwing any codes. The brake light is also on, yet seems to be no braking problems.

99 Dodge Ram 2500 Turbo Diesel.

junior3382 · 06-30-2008, 05:54 PM

The ABS sensor box is located in the cab, if it got wet for any reason it sould signal the lights, however, since this is not a mechanical problem that influencies the operation of the engine and the transmission, the ECU will generally not read it as a problem. However, that is also why there is a seperate light for it. Could also be a fuse as well. Did you check the fuses? There is also a sensor on the brake pedal, and the E-brake lever that should be checked.

mudseeker · 06-30-2008, 06:13 PM

what type of scanner did you use when trying to retrieve codes? most generic code readers will not access the ABS system, such as the ones autozone uses for their free service.

if the light is on i can almost guarantee their is a code present.

leolkfrm · 06-30-2008, 06:55 PM

a good scanner will probably tell you a wheel sensor is not reading and which one it is. I've always said a GOOD scanner is worth their weight.

Moostang · 07-01-2008, 05:32 AM

I am at work and don't have the scanner right now, but looking at pics, it I think it is the Actron CP9135 are getting tired of trying to figure out the beeps on my old OBD-I Equus for my ford, when needed an OBD-II for the Saturn I got one with a digital display.

Not sure if he has checked fuses yet (hubby's truck) but I will see.

mudseeker · 07-01-2008, 09:00 AM

i'm sorry, but that code reader will not be able to retrieve ABS codes. it is only capable of retrieveing SES light codes

Moostang · 07-01-2008, 09:05 AM

Ugh, well that sucks I suppose there is no other way to see if there are codes without buying a new scanner or taking it somewhere then?

Moostang · 07-01-2008, 10:15 AM

I just got an email, he has lost the speedo under 25mph, so he is thinking sensor is dead

mudseeker · 07-01-2008, 11:13 AM

that's a good possibility.

there's an ABS thread on here where me and crab found some good deals on ABS scanners. work computer won't let me use the search function, but i think i found one for under $200.

mudseeker · 07-01-2008, 11:17 AM

i found it in this section. named "ABS light constantly on" i think. stupid work computer won't let me copy/paste the link.

06-30-2008, 05:32 PM	#1 (permalink)
Moostang Senior Moderator Join Date: Apr 2005 Location: Cali-4 Nye-Aye? Posts: 1,132	ABS light but no codesfixed What would cause the ABS light to come on and not turn off, but the truck is not throwing any codes. The brake light is also on, yet seems to be no braking problems. 99 Dodge Ram 2500 Turbo Diesel. __________________ MEOW!! http://moostangproductions.com

06-30-2008, 05:54 PM	#2 (permalink)
junior3382 Senior Member Join Date: Mar 2007 Location: I live in south central PA, but grew up in Maine Posts: 2,246	The ABS sensor box is located in the cab, if it got wet for any reason it sould signal the lights, however, since this is not a mechanical problem that influencies the operation of the engine and the transmission, the ECU will generally not read it as a problem. However, that is also why there is a seperate light for it. Could also be a fuse as well. Did you check the fuses? There is also a sensor on the brake pedal, and the E-brake lever that should be checked. __________________ Lets get some mud on the tires...eh?!?!? OWN: 1998 Chevy Blazer ls 4x4 4.3l Vortec V6 1998 Mazda B3000 SE 4WD 3.0L V6 3" lift 31x10.50 Liberator A/T's Last edited by junior3382; 06-30-2008 at 06:15 PM.

06-30-2008, 06:13 PM	#3 (permalink)
mudseeker Moderator Join Date: Feb 2006 Location: michigan Posts: 3,254	what type of scanner did you use when trying to retrieve codes? most generic code readers will not access the ABS system, such as the ones autozone uses for their free service. if the light is on i can almost guarantee their is a code present. __________________

07-01-2008, 05:32 AM	#5 (permalink)
Moostang Senior Moderator Join Date: Apr 2005 Location: Cali-4 Nye-Aye? Posts: 1,132	I am at work and don't have the scanner right now, but looking at pics, it I think it is the Actron CP9135 are getting tired of trying to figure out the beeps on my old OBD-I Equus for my ford, when needed an OBD-II for the Saturn I got one with a digital display. Not sure if he has checked fuses yet (hubby's truck) but I will see. __________________ MEOW!! http://moostangproductions.com

07-01-2008, 09:00 AM	#6 (permalink)
mudseeker Moderator Join Date: Feb 2006 Location: michigan Posts: 3,254	i'm sorry, but that code reader will not be able to retrieve ABS codes. it is only capable of retrieveing SES light codes __________________

06-30-2008, 06:55 PM	#4 (permalink)
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 502	a good scanner will probably tell you a wheel sensor is not reading and which one it is. I've always said a GOOD scanner is worth their weight.

07-01-2008, 09:05 AM	#7 (permalink)
Moostang Senior Moderator Join Date: Apr 2005 Location: Cali-4 Nye-Aye? Posts: 1,132	Ugh, well that sucks I suppose there is no other way to see if there are codes without buying a new scanner or taking it somewhere then? __________________ MEOW!! http://moostangproductions.com

07-01-2008, 10:15 AM	#8 (permalink)
Moostang Senior Moderator Join Date: Apr 2005 Location: Cali-4 Nye-Aye? Posts: 1,132	I just got an email, he has lost the speedo under 25mph, so he is thinking sensor is dead __________________ MEOW!! http://moostangproductions.com

07-01-2008, 11:13 AM	#9 (permalink)
mudseeker Moderator Join Date: Feb 2006 Location: michigan Posts: 3,254	that's a good possibility. there's an ABS thread on here where me and crab found some good deals on ABS scanners. work computer won't let me use the search function, but i think i found one for under $200. __________________

07-01-2008, 11:17 AM	#10 (permalink)
mudseeker Moderator Join Date: Feb 2006 Location: michigan Posts: 3,254	i found it in this section. named "ABS light constantly on" i think. stupid work computer won't let me copy/paste the link. __________________

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