C0031 on Jeep
Left Front Wheel Speed Sensor Circuit
C0031 on Jeep vehicles indicates left front wheel speed sensor circuit. Au7o has documented this code across 1 Jeep model — most commonly on Grand Cherokee. 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.
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 Jeep by Model
Jeep Grand Cherokee(1 issue)
- 2019 Grand Cherokee ABS Warning - Diagnose the Wheel-Speed Circuit First2019
On 2019 model-year Jeep Grand Cherokee (WK) vehicles, an ABS warning that diagnosis traces to a wheel-speed circuit may be caused by an incompletely latched connector, water intrusion and corroded connector pins, rust or contamination at the sensor and tone wheel, or a faulty sensor. FCA warns that replacing a good sensor while leaving a damaged harness in place can cause the concern to return. The previous card incorrectly generalized this condition across 2011-2021 vehicles, named the right-front sensor as a common cause, listed unsupported DTCs and symptoms, and presented three universal repair parts.
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View C0031 across all makes →Frequently Asked Questions
What does C0031 mean on Jeep?▼
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 Jeep specifically, this code is documented across 1 model.
What causes C0031 on Jeep vehicles?▼
Common causes on Jeep: 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 Jeep?▼
Repair costs vary widely depending on the root cause and specific Jeep model.
Which Jeep models have C0031 documented?▼
Au7o has documented C0031 on 1 Jeep model: Grand Cherokee.