The C0035 code in your 2018 Honda Accord indicates a problem with the left front wheel speed sensor circuit. The ABS light on your dashboard means the Anti-lock Braking System has detected a fault and may be disabled. Your regular brakes will still work, but ABS functionality may be compromised.
What the Wheel Speed Sensor Does
Wheel speed sensors tell the ABS module how fast each wheel is rotating. This information is critical for ABS operation—the system needs to know if a wheel is locking up during braking. If a sensor fails or provides incorrect data, ABS can't function properly.
Common Causes of C0035
Failed wheel speed sensor due to age or damage. Wiring damage between the sensor and ABS module. Corroded connector at the sensor. Sensor gap issue from worn wheel bearing. Damaged tone ring that the sensor reads. Debris or contamination on the sensor.
Symptoms You May Notice
ABS warning light illuminated. Traction control light may also illuminate (shared sensors). ABS may not engage during hard braking. No impact on normal braking in non-ABS situations.
Diagnostic Steps
Using Honda HDS or an ABS-capable scanner, confirm the specific fault location. Inspect the left front sensor and wiring for visible damage. Check the sensor connector for corrosion. Measure sensor resistance and compare to specifications. Check the tone ring for damage when wheel is removed.