C0037 on Ford
Left Rear Wheel Speed Sensor Circuit
C0037 on Ford vehicles indicates left rear wheel speed sensor circuit. Au7o has documented this code across 1 Ford model — most commonly on Transit Connect. C0037 is a generic OBD-II chassis code indicating a fault in the left-rear wheel speed sensor circuit. This sensor reports how fast the left-rear wheel is turning to the ABS, traction control, and stability control systems. When the module loses or sees an invalid signal from this sensor, it sets the code and typically disables ABS and traction/stability control, illuminating those warning lights. Regular braking remains functional, but the anti-lock and stability features may be inactive. Typical repair costs on Ford range from $120 to $650, depending on the specific model and root cause.
Common Causes of C0037
- •Damaged or corroded wiring near the sensor
- •Failed left-rear wheel speed sensor
- •Corroded or loose sensor connector
- •Damaged tone/reluctor ring or excessive air gap
- •Debris, rust, or metal shavings at the sensor tip
- •Open or short in the sensor circuit
- •ABS module fault or loss of communication
C0037 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 C0037 across all makes →Frequently Asked Questions
What does C0037 mean on Ford?▼
C0037 stands for "Left Rear Wheel Speed Sensor Circuit." C0037 is a generic OBD-II chassis code indicating a fault in the left-rear wheel speed sensor circuit. This sensor reports how fast the left-rear wheel is turning to the ABS, traction control, and stability control systems. When the module loses or sees an invalid signal from this sensor, it sets the code and typically disables ABS and traction/stability control, illuminating those warning lights. Regular braking remains functional, but the anti-lock and stability features may be inactive. On Ford specifically, this code is documented across 1 model.
What causes C0037 on Ford vehicles?▼
Common causes on Ford: Damaged or corroded wiring near the sensor, Failed left-rear wheel speed sensor, Corroded or loose sensor connector, Damaged tone/reluctor ring or excessive air gap, Debris, rust, or metal shavings at the sensor tip. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C0037 on a Ford?▼
Repair costs on Ford range from $120 to $650, depending on the specific model and root cause.
Which Ford models have C0037 documented?▼
Au7o has documented C0037 on 1 Ford model: Transit Connect.