ABS Enable Relay Circuit Short
The C0028 code means the vehicle's onboard diagnostic system has detected: ABS Enable Relay Circuit Short. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $30 - $400 (parts and labor)
Basic scanners cannot read ABS codes. BlueDriver reads all systems including ABS, SRS, and transmission through your phone.
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Common Symptoms
- ABS warning light on
- ABS fuse blown
- ABS relay may be hot to the touch
- Multiple ABS codes stored
Probable Causes (Ranked by Likelihood)
- Shorted ABS relay internal contacts Very High
- Pinched relay control wiring High
- Water intrusion into relay socket Moderate
- ABS module relay driver shorted Low
Step-by-Step Diagnostic Procedure
-
Inspect ABS relay and socket for signs of overheating
-
Check relay control wiring for pinches or bare wire
-
Test for short circuit at relay socket terminals
-
Inspect relay socket for water or corrosion damage
Frequently Asked Questions
Can a shorted relay blow the ABS fuse?
Yes, excessive current from a short will blow the fuse. Replace both after fixing the short.
Why is my ABS relay hot?
Excessive current flow indicates an internal short or downstream wiring short. This is a fire risk.
Can water cause the relay to short?
Yes, water intrusion into the relay socket can create short circuits between terminals.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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