Abs - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 10-08-2012, 04:54 PM   #1
Junior Member
Thread Starter
 
Join Date: Oct 2012
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
chevy is on a distinguished road
Default Abs

My ABS light and brake light are on I have a code reader the code is C0265 and can't seem to fix it anybody got ideas what to do to fix it
chevy is offline   Reply With Quote
Old 10-08-2012, 05:15 PM   #2
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,647
Thanked 998 Times in 774 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

It would help us if we knew what kind of vehicle you have.
Mike is offline   Reply With Quote
Old 10-08-2012, 05:21 PM   #3
Junior Member
Thread Starter
 
Join Date: Oct 2012
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
chevy is on a distinguished road
Default

I have a 2001 chev blazer 4X4 ABS code that came up is C0265
chevy is offline   Reply With Quote
Old 10-08-2012, 05:47 PM   #4
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,647
Thanked 998 Times in 774 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

While your waiting, please listen to some fine elevator music and take the time to put your vehicle info in your signature please. This can be done in the "User CP" button top left of the screen here.

I'll go digging up your code.
Mike is offline   Reply With Quote
Old 10-08-2012, 05:56 PM   #5
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,647
Thanked 998 Times in 774 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

This is what I got from AllDataDiy. I pulled up the code using my 2000 Chevy Blazer, so it should work for you. Looks like you may have 2 different types of ABS modules, so I will post both diagnostic information for you that pertains to this code....

310 ABS



Circuit Description
The EBCM internal relay supplies battery voltage to all six valve solenoids and the pump motor. The low side of each solenoid coil has a feedback circuit to the EBCM microprocessor. When the relay is commanded off, feedback voltage is low. When the EBCM relay is commanded on, feedback voltage is high.

Conditions for Running the DTC
  • The ignition is ON.
  • The IPC bulb check is complete.
  • The vehicle is moving at a speed greater than 5 km/h (3 mph).
Conditions for Setting the DTC

C0265
The EBCM microprocessor detects low feedback voltage from all of the valve solenoids when the relay is commanded on.

C0266
The EBCM microprocessor detects high feedback voltage from all of the valve solenoids when the relay is commanded off.

Action Taken When the DTC Sets

  • The ABS and BRAKE indicators are commanded on.
  • The ABS is disabled for the remainder of the ignition cycle.
  • The EBCM aborts all other self-tests for components that are powered by the relay (DTC C0265 only).
Conditions for Clearing the DTC

  • Repair the condition(*) responsible for setting the Diagnostic Trouble Code (DTC).
  • Use a scan tool in order to clear the DTC.
Diagnostic Aids

C0265
An intermittent DTC C0265 may be caused by a problem in the battery positive voltage circuit wiring or connection to the EBCM.
Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Inspect for the following:

  • Backed out terminals
  • Improper mating
  • Broken locks
  • Corrosion
  • Improperly formed or damaged terminals
  • Poor terminal-to-wiring connections
  • Physically damaged wiring
  • Wiring broken inside the insulation
C0266
An intermittent Diagnostic Trouble Code (DTC) C0266 can be set by a number of internal EBCM problems. If DTC C0266 continues to set intermittently, replace the EBCM.

Test Description
The number below refers to the step number on the diagnostic table.

  1. This step tests if the battery positive voltage circuit can supply adequate power to the EBCM internal relay.

-------------------------------------------------------------------------
325 ABS


Circuit Description
The EBCM internal relay supplies battery voltage to all six valve solenoids and the pump motor. The low side of each solenoid coil has a feedback circuit to the EBCM microprocessor. When the relay is commanded off, feedback voltage is low. When the EBCM relay is commanded on, feedback voltage is high.

Conditions for Running the DTC
  • The ignition is ON.
  • The IPC bulb check is complete.
  • The vehicle is moving at a speed greater than 5 km/h (3 mph).
Conditions for Setting the DTC

C0265
The EBCM microprocessor detects low feedback voltage from all of the valve solenoids when the relay is commanded on.

C0266
The EBCM microprocessor detects high feedback voltage from all of the valve solenoids when the relay is commanded off.

Action Taken When the DTC Sets

  • The ABS and BRAKE indicators are commanded on.
  • The ABS and DRP are disabled for the remainder of the ignition cycle.
  • The EBCM aborts all other self-tests for components that are powered by the relay (DTC C0265 only).
Conditions for Clearing the DTC

  • Repair the condition(*) responsible for setting the DTC.
  • Use a scan tool in order to clear the DTC.
Diagnostic Aids

C0265
An intermittent DTC C0265 may be caused by a problem in the battery positive voltage circuit wiring or connection to the EBCM.
Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Inspect for the following:

  • Backed out terminals
  • Improper mating
  • Broken locks
  • Corrosion
  • Improperly formed or damaged terminals
  • Poor terminal-to-wiring connections
  • Physically damaged wiring
  • Wiring broken inside the insulation
C0266
An intermittent DTC C0266 can be set by a number of internal EBCM problems. If DTC C0266 continues to set intermittently, replace the EBCM.

Test Description
The number below refers to the step number on the diagnostic table.

  1. This step tests if the battery positive voltage circuit can supply adequate power to the EBCM internal relay.
Attached Thumbnails
Abs-310abs.gif   Abs-325abs.gif  
Mike is offline   Reply With Quote
Old 10-08-2012, 07:16 PM   #6
Junior Member
Thread Starter
 
Join Date: Oct 2012
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
chevy is on a distinguished road
Default

Thanks I have been looking for bad wire and will keep checking
chevy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
ABS code C1233 R F Speed Sensor open or shorted with ABS and TRAC OFF lights on dash bighank Buick 21 07-24-2015 12:35 PM
ABS light on, cannot read ABS codes?! B4CTROOPER 2000-2005 1 01-04-2010 06:53 PM
ABS/Traction light on...but i still have ABS ptrfair 2000-2005 0 12-11-2007 08:33 PM
ABS ON....ABS OFF jessie_harbin 1992-1999 23 12-17-2005 07:30 PM
ABS/Traction willwren 1992-1999 12 09-24-2002 01:02 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:46 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.