When both the ABS warning light and traction control warning illuminate on your 2019 Chrysler Voyager, the vehicle is telling you its stability systems are disabled. Code C0035 points to a left front wheel speed sensor problem—one of four sensors critical to ABS, traction control, and stability control operation.
Understanding the System
Wheel speed sensors at each corner measure how fast each wheel is rotating. This information feeds the ABS module, which uses it to detect wheel lockup (ABS), wheel spin (traction control), and vehicle instability (electronic stability control). When one sensor fails or gives erratic data, the system disables itself as a safety precaution.
What C0035 Means
C0035 indicates a problem with the left front wheel speed sensor circuit. This could be the sensor itself, wiring to the sensor, the reluctor ring the sensor reads, or connections at the ABS module. The specific digit in the code varies by manufacturer to indicate which wheel.
Symptoms
- ABS warning light illuminated
- Traction control warning light on
- Stability control warning (if equipped)
- ABS not functioning during hard braking
- Traction control not intervening when wheels spin
- Possible speedometer issues (some systems use wheel speed for speed calculation)
Common Causes
Sensor Failure
The sensor itself can fail from exposure, age, or impact damage. The sensing element or internal electronics can fail while the connector remains intact.
Wiring Damage
The wire from the sensor to the ABS module routes through areas subject to road debris, moisture, and movement. Damaged insulation, broken wires, or corroded connections cause signal problems.
Reluctor Ring Damage
The toothed ring the sensor reads can become damaged, cracked, or contaminated with debris. Damaged teeth create erratic signals.
Connector Problems
Corrosion or loose connections at the sensor connector or ABS module can interrupt signal transmission.
Hub Bearing Assembly
Many modern vehicles integrate the reluctor ring into the wheel bearing assembly. If the bearing has been replaced with a unit lacking the reluctor, or if the ring is damaged, the sensor can't read properly.
Diagnostic Steps
- Scan for codes: Confirm C0035 and check for additional codes that might indicate multiple sensors or module issues.
- Visual inspection: Examine the left front wheel speed sensor, wiring, and connector for obvious damage.
- Sensor resistance test: Measure sensor resistance compared to specifications or the opposite side.
- Signal test: Using a scan tool or oscilloscope, check for proper signal while rotating the wheel.
- Inspect reluctor ring: Check for damaged or missing teeth on the reluctor ring visible behind the hub.
Repair Options
Sensor Replacement
If the sensor is failed, replacement is straightforward. The sensor mounts in or near the steering knuckle. Cost: $100-$250 including labor.
Wiring Repair
Damaged wiring can be repaired or the affected section replaced. Cost: $100-$300 depending on damage extent.
Connector Cleaning/Repair
Corroded connectors can sometimes be cleaned; damaged connectors may need replacement. Cost: $50-$150.
Hub Bearing Replacement
If the reluctor ring is integrated into the bearing and damaged, the entire hub assembly needs replacement. Cost: $300-$600.
Driving Without ABS
The vehicle remains drivable, but ABS, traction control, and stability control are disabled. Brake normally—just know that antilock function won't intervene in hard stops. Drive cautiously, especially in poor conditions.