C0031 on Ford
Left Front Wheel Speed Sensor Circuit
C0031 on Ford vehicles indicates left front wheel speed sensor circuit. Au7o has documented this code across 1 Ford model — most commonly on Transit Connect. C0031 is a chassis/brake code indicating a fault in the left front wheel speed sensor circuit. The ABS module relies on this sensor to measure individual wheel rotation for anti-lock braking, traction control, and stability control; when it detects an open, short, or implausible signal it sets this code. The ABS, traction control, and stability control warning lights typically illuminate and those systems may be temporarily disabled, while normal (non-ABS) braking usually still works. Typical repair costs on Ford range from $120 to $650, depending on the specific model and root cause.
Common Causes of C0031
- •Failed left front wheel speed sensor
- •Damaged sensor wiring or chafed harness
- •Corroded or loose sensor connector
- •Damaged or contaminated tone/reluctor ring (metal debris, rust)
- •Excessive sensor-to-ring air gap or wheel bearing play
- •ABS control module fault
C0031 on Ford by Model
Ford Transit Connect(1 issue)
- ABS Wheel Speed Sensor/Wiring Fault (ABS/Traction Control Lights On)2014-2021
Transit Connect owners report intermittent ABS and traction control warnings caused by wheel speed sensor signal dropouts, often due to sensor contamination, corrosion at connectors, or damaged wiring near the hubs. The issue can be intermittent and may also disable stability control functions until repaired. This pattern appears in NHTSA complaints and owner reports describing ABS/AdvanceTrac warnings and sensor replacement.
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View C0031 across all makes →Frequently Asked Questions
What does C0031 mean on Ford?▼
C0031 stands for "Left Front Wheel Speed Sensor Circuit." C0031 is a chassis/brake code indicating a fault in the left front wheel speed sensor circuit. The ABS module relies on this sensor to measure individual wheel rotation for anti-lock braking, traction control, and stability control; when it detects an open, short, or implausible signal it sets this code. The ABS, traction control, and stability control warning lights typically illuminate and those systems may be temporarily disabled, while normal (non-ABS) braking usually still works. On Ford specifically, this code is documented across 1 model.
What causes C0031 on Ford vehicles?▼
Common causes on Ford: Failed left front wheel speed sensor, Damaged sensor wiring or chafed harness, Corroded or loose sensor connector, Damaged or contaminated tone/reluctor ring (metal debris, rust), Excessive sensor-to-ring air gap or wheel bearing play. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C0031 on a Ford?▼
Repair costs on Ford range from $120 to $650, depending on the specific model and root cause.
Which Ford models have C0031 documented?▼
Au7o has documented C0031 on 1 Ford model: Transit Connect.