• ABS warning light illuminated
• Reduced braking performance
• ABS system not functioning properly
• Faulty left front wheel speed sensor
• Damaged or corroded wiring or connectors
• Malfunctioning ABS module
ABS: Anti-lock Braking System
DTC: Diagnostic Trouble Code
• C0031
• C0032
This code means there's a problem with one of the car's wheels that helps it stop safely. It's like when your bike's brakes aren't working right.
The C0033 code indicates an issue with the left front wheel speed sensor, which is part of the anti-lock braking system (ABS).
C0033 is a diagnostic trouble code (DTC) for 'Left Front Wheel Speed Sensor Circuit'. This code is triggered when the ABS module detects a malfunction in the left front wheel speed sensor circuit. The wheel speed sensor is responsible for monitoring the speed of the wheel and sending this information to the ABS module to help control the braking system.
• Check for any other related trouble codes.
• Inspect the left front wheel speed sensor and its wiring for damage.
• Test the sensor with a multimeter to ensure it is functioning correctly.
• Replace the left front wheel speed sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the ABS module if necessary.
• OBD-II scanner
• Multimeter
• Jack and jack stands
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford Focus
• Regularly inspect wheel speed sensors and wiring.
• Keep the ABS system clean and free of debris.
• Perform routine maintenance checks on the braking system.
Sensor Issue
• Avoid driving aggressively to reduce wear on the braking system.
• Have the vehicle inspected by a professional if the ABS light is on.
Wheel speed sensors may be covered under the vehicle's powertrain or emissions warranty. Check with the manufacturer.
C0033 has been a common code for vehicles equipped with ABS systems since the early 2000s, as wheel speed sensors became standard.
Moderate – While the vehicle may still be drivable, the ABS system may not function properly, which can affect braking safety.
Driving with a malfunctioning ABS system can be dangerous and may not comply with vehicle safety regulations.
• Vehicle must be driven at a speed above 10 mph.
• The ABS system must be active during testing.
The left front wheel speed sensor is located near the brake rotor on the left front wheel hub assembly.
Q: Can I drive with a C0033 code?
A: You can drive, but it's not recommended as your ABS system may not work properly, affecting your ability to stop safely.
Q: How do I reset the ABS light after fixing C0033?
A: After repairs, use an OBD-II scanner to clear the code and reset the ABS light.
