ABS Trouble Code Charts For Select Monitor Results

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NOTE: Trouble code 21 (Front right), code 23 (Front left), code 25 (Rear right), code 27 (Rear left) - Abnormal ABS sensor (Open or short circuit in ABS sensor circuit)

DIAGNOSIS:
- Faulty ABS sensor (Broken wire, input voltage too high)
- Faulty harness connector

TROUBLE SYMPTOM:
- ABS does not operate.





WIRING DIAGRAM: