ABS Codes C1230, C1229
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Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
ABS Codes C1230, C1229
I have had an intermittent ABS light for a while now. Since I have gotten the injector o-ring issues, and oil consumption problems nailed down, I am starting to check other things off the list. I have 2 codes:
C1229 Speed Wheel Sensor Rear Center Coherency Fault
C1230 Speed Wheel Sensor Rear Center Input Circuit Failure
What do I have to do/buy in order to fix this issue?
As always, thank you, in advance, for the help.
C1229 Speed Wheel Sensor Rear Center Coherency Fault
C1230 Speed Wheel Sensor Rear Center Input Circuit Failure
What do I have to do/buy in order to fix this issue?
As always, thank you, in advance, for the help.
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
These codes point to a faulty VSS or wiring issue to/from it. Another way to test the VSS is to connect a DVOM to the sensor terminals (kind of tricky to do 
) with it set on the lowest AC volts setting. You should get a fluctuation in voltage as the tone ring teeth pass by the sensor while you spin the differential with the wheels off the ground. The VSS is cheap enough that you might just want to replace it, if hasn't been already.
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Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
I never have replaced it and I have owned the truck since 2007. I have also been having some issues with the tranny occasionally hunting around at light throttle it searches between 1800-2100rpm. Feels almost like the torque converter is locking and unlocking. Would the VSS being bad have anything to do with that?
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
I never have replaced it and I have owned the truck since 2007. I have also been having some issues with the tranny occasionally hunting around at light throttle it searches between 1800-2100rpm. Feels almost like the torque converter is locking and unlocking. Would the VSS being bad have anything to do with that?
Thread Starter
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Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
It isn't doing anything with the speedometer, but the tranny is definitely off intermittently.
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Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
I replaced it with OEM ford piece and it made no change still getting the codes. Must ne a wiring issue.
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
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