C003A on Jeep
Right Rear Wheel Speed Sensor Circuit
C003A on Jeep vehicles indicates right rear wheel speed sensor circuit. Au7o has documented this code across 1 Jeep model — most commonly on Grand Wagoneer. C003A is a chassis/brake code indicating a fault in the right rear wheel speed sensor circuit. The ABS module uses this sensor to track right-rear wheel rotation for anti-lock braking, traction control, and stability control, and stores the code when it detects an open, short, or implausible signal. The ABS, traction, and stability control warning lights commonly illuminate and those systems may be deactivated, while base braking usually still works. Typical repair costs on Jeep range from $250 to $1,200, depending on the specific model and root cause.
Common Causes of C003A
- •Failed right rear wheel speed sensor
- •Damaged or chafed sensor wiring
- •Corroded or loose sensor connector
- •Damaged or contaminated tone/reluctor ring
- •Excessive air gap or wheel bearing play
- •ABS control module fault
C003A on Jeep by Model
Jeep Grand Wagoneer(1 issue)
- Electronic Stability Control/ABS warning with wheel speed sensor or tone ring faults2022-2024
NHTSA complaints and owner reports describe intermittent ABS/ESC warnings on Grand Wagoneer tied to wheel speed sensor signal loss or erratic readings, sometimes after wet weather or road debris impacts. When the system detects implausible wheel speed data, it can disable ABS/ESC functions and illuminate multiple warnings.
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What does C003A mean on Jeep?▼
C003A stands for "Right Rear Wheel Speed Sensor Circuit." C003A is a chassis/brake code indicating a fault in the right rear wheel speed sensor circuit. The ABS module uses this sensor to track right-rear wheel rotation for anti-lock braking, traction control, and stability control, and stores the code when it detects an open, short, or implausible signal. The ABS, traction, and stability control warning lights commonly illuminate and those systems may be deactivated, while base braking usually still works. On Jeep specifically, this code is documented across 1 model.
What causes C003A on Jeep vehicles?▼
Common causes on Jeep: Failed right rear wheel speed sensor, Damaged or chafed sensor wiring, Corroded or loose sensor connector, Damaged or contaminated tone/reluctor ring, Excessive 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 C003A on a Jeep?▼
Repair costs on Jeep range from $250 to $1,200, depending on the specific model and root cause.
Which Jeep models have C003A documented?▼
Au7o has documented C003A on 1 Jeep model: Grand Wagoneer.