🚨 Diagnostic Profile
- Vehicle/Equipment Make: GENERIC
- Technical Description: Right Front Wheel Speed Sensor B Circuit/Open
Code C0658 is a Chassis-specific trouble code monitored by the Electronic Brake Control Module (EBCM), also referred to in some architectures as the ABS/Traction Control Module. This code indicates that the module has detected an open circuit, short, or loss of signal continuity on the Right Front Wheel Speed Sensor (WSS) circuit, often labeled ‘Sensor B’ in multi-channel ABS wiring diagrams. The wheel speed sensor is responsible for sending a consistent frequency signal to the EBCM so it can calculate individual wheel rotation speed relative to the other three wheels. When the module sees an interruption, non-existent voltage, or an erratic signal from the right front sensor circuit—whether due to a broken wire, corroded connector, failed sensor coil, or a damaged tone ring—it sets C0658 and typically disables ABS, traction control, and electronic stability control functions as a safety precaution. Drivers will commonly notice the ABS warning light, Traction Control light, and/or Stability Control light illuminated on the dash simultaneously, since the module cannot safely modulate braking force without accurate wheel speed data from all four corners.
🚨 Repair Difficulty Tier
- Difficulty Rating: Intermediate
This repair requires the use of a digital multimeter to check circuit resistance and voltage, along with a capable scan tool to read live wheel speed sensor data and confirm which specific wheel is reporting a fault. While the wiring and connector inspection can be handled by an experienced DIYer with proper safety precautions (vehicle lift, wheel removal), replacing a wheel speed sensor sometimes requires bearing/hub assembly disassembly depending on the vehicle platform, pushing this toward professional-level work for some applications.
🛠️ Resolution Steps
- Step 1: Preliminary Inspection
Raise and secure the vehicle safely, then visually inspect the right front wheel speed sensor, its wiring harness, and connector. Look for cut, pinched, or chafed wiring near the strut, control arm, or brake hose routing. Check the connector for corrosion, bent pins, or moisture intrusion. Also inspect the tone ring (reluctor ring) on the hub or CV axle for missing teeth, rust buildup, or physical damage, as debris can also interfere with the magnetic field the sensor reads. - Step 2: Diagnostic Verification
Using a scan tool capable of accessing the ABS/EBCM module, pull live wheel speed sensor data for all four corners while slowly rolling the vehicle (if safe) or during a wheel-speed sensor test routine. Compare the right front sensor’s signal activity to the other three; an unresponsive or erratic signal confirms the fault location. Follow up with a digital multimeter at the sensor connector (key off, sensor unplugged) to check for proper resistance (typically between 800–2,500 ohms depending on sensor type) and inspect for infinite resistance (open circuit) or a dead short to ground. - Step 3: Resolution & Reset Process
If the sensor itself tests out of specification, replace the right front wheel speed sensor assembly. If the wiring harness is damaged, repair or replace the harness section with proper soldering and heat-shrink or OEM-style connectors—never use simple electrical tape splices in this circuit due to vibration exposure. After repair, clear the stored code using the scan tool and perform a test drive to confirm the ABS, Traction Control, and Stability Control lights remain off and that live wheel speed data is stable and consistent across all four sensors.
📦 Parts, Labor, and Budget Estimates
- Required Components/Software: Right Front Wheel Speed Sensor, wiring harness repair kit (if needed), digital multimeter, bidirectional ABS-capable scan tool
- Average Component Price: $45 – $120 USD (sensor only); $60 – $180 USD if hub/bearing assembly replacement is required
- Estimated Labor Hours: 0.5 – 1.5 hours for sensor replacement; up to 2.5 hours if integrated into hub assembly or if wiring repair is extensive
- Total Estimated Budget: $100 – $350 USD depending on sensor accessibility, wiring complexity, and whether hub assembly replacement is required