Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is not getting a signal from the sensor that tells it how fast the back left wheel is spinning.
The wheel speed sensor is a device that monitors the speed of the wheel and sends this information to the car's computer. An 'open circuit' means there is a break or disconnection in the wiring or sensor.
The C1206 code indicates that the vehicle's ABS (Anti-lock Braking System) module has detected an open circuit in the rear left wheel speed sensor. This could be due to a broken wire, a faulty sensor, or a poor connection, resulting in the ABS system being unable to monitor the wheel's speed accurately.
• ABS warning light illuminated
• Traction control light may be on
• Inoperative or erratic ABS function
• Faulty wheel speed sensor
• Damaged wiring or connectors
• Corroded or loose connections
ABS: Anti-lock Braking System
OBD-II: On-Board Diagnostics, Second Generation
• Perform a visual inspection of the rear left wheel speed sensor and wiring.
• Use a multimeter to check for continuity in the sensor circuit.
• Inspect the ABS module for any stored codes or faults.
• Replace the faulty wheel speed sensor.
• Repair or replace damaged wiring or connectors.
• Ensure all connections are clean and secure.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regularly inspect wheel speed sensors and wiring.
• Avoid driving in conditions that may damage undercarriage components.
• Keep the vehicle's ABS system maintained.
Sensor Issue
• Do not ignore the ABS warning light.
• Get the vehicle checked by a professional if unsure.
• Avoid hard braking until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage related to ABS components.
This code has been commonly reported in vehicles with ABS systems, especially in older models where wiring may be more prone to wear and tear.
Moderate – While the vehicle may still be drivable, the ABS system may not function properly, affecting braking performance.
Driving with a malfunctioning ABS system can be dangerous, especially in wet or slippery conditions. It is advisable to have the issue resolved promptly.
• Vehicle parked on a level surface
• Ignition in the 'on' position
The wheel speed sensor is located near the brake rotor on the rear left wheel.
Q: Can I drive with a C1206 code?
A: While you can drive, it's not recommended as the ABS system may not function properly, affecting safety.
Q: How can I reset the ABS light?
A: Fix the underlying issue and use an OBD-II scanner to clear the code.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
View on Amazon
Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
View on Amazon
Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.