open circuit C1233
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 1,190
Likes: 56
From: Milan Indiana
open circuit C1233
Had code for Wheel sensor on rigt front of my 2004 Z06. Found a new sensor harness and installed- yet My dash still shows ABS light/traction control service light and going through diagnostics shows C1233 code which I believe means an open circuit or short How do I check for this and fix? Not anywhere up to speed on this electronic stuff Need help- hate having lights on BTW I've tried to delete codes but this one keeps coming back Has a H and a C behind it HELP !
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,658
Likes: 4,090
From: Cape Coral, Florida
Yes, 1233 means wheel speed sensor “open or shorted“...you WILL have to at least troubleshoot this with a DVOM so if your not up to speed with this electrical stuff there is not much we can do to help...was the short sensor harness replaced ??...one would measure the resistance across the sensor and also you can spin the wheel and see if the sensor puts out an AC voltage...then you would remove the harness connector closet to the sensor and also at the EBCM...you would then check for an open or short on both of the 2 sensor wires...OR take it to a shop !!
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,658
Likes: 4,090
From: Cape Coral, Florida
Tech Contributor
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From: Charlotte, NC (formerly Endicott, NY)
Had code for Wheel sensor on rigt front of my 2004 Z06. Found a new sensor harness and installed- yet My dash still shows ABS light/traction control service light and going through diagnostics shows C1233 code which I believe means an open circuit or short How do I check for this and fix? Not anywhere up to speed on this electronic stuff Need help- hate having lights on BTW I've tried to delete codes but this one keeps coming back Has a H and a C behind it HELP !
Bill
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,658
Likes: 4,090
From: Cape Coral, Florida
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Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 1,190
Likes: 56
From: Milan Indiana
Bill I replaced the wheel sensor harness this morning the piece that plugs into hub and runs up to the frame. It did not fix the problem I. am doing the diagnostics tomorrow Open circuit/short location hopefully found then. I can do most other work( having had 20 Corvettes) but stay away from any electrical/electronic
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
Bill I replaced the wheel sensor harness this morning the piece that plugs into hub and runs up to the frame. It did not fix the problem I. am doing the diagnostics tomorrow Open circuit/short location hopefully found then. I can do most other work( having had 20 Corvettes) but stay away from any electrical/electronic
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 1,190
Likes: 56
From: Milan Indiana
Never said I didnt deal with any electrical issues before. I had a local shop/friend who managed them for me No longer available I spent my whole caterer in Law Enforcement- not mechanics. Thanks for the response
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,658
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From: Cape Coral, Florida
If you have a DVOM it’s VERY easy to diagnose a wiring issue...disconnect the harness connector closet to the hub and measure the voltage across the 2 wires that go to the EBCM...key must be ON !!...there is a bias voltage (5 volts) on the signal wire and the other wire is a “low reference”...basically a ground...if you read 5 volts across both wires with your DVOM your signal and low reference wiring is FINE !!
Last edited by C5 Diag; Jun 14, 2020 at 02:43 PM.
