C0565
ABS Control Module System Voltage High
What it means
C0565 means ABS Control Module System Voltage High.
Where it lives
For C0565, the part to look at first is the module named here.
Check these first
- A charging system that supplies too much voltage
- A failed alternator voltage regulator
- An open or short in the ABS module power circuit
- A poor ground at the ABS module
What to do next
- Read system voltage at the ABS module on a scan tool
- Test the alternator output and voltage regulator
- Inspect the ABS module power and ground circuits
- Check the battery and charging system connections
- Repair the charging fault or the ABS module ground
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.