Code
C0045
Brakes / ABS
Left rear wheel speed sensor circuit malfunction
The ABS module has no valid signal from the left rear wheel sensor.
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Most likely causes
- Faulty wheel speed sensor
- Wiring fault
- Bad tone ring
Symptoms you may notice
- ABS/ESP warning light
- ABS may not work
Checks to run
- Measure sensor signal
- Inspect wiring and tone ring
Tools you may need
Multimeter
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.