Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble understanding the signal from the left back wheel's speed sensor. It's like when you can't read a friend's handwriting.
The vehicle's ABS system is detecting an implausible signal from the left rear wheel speed sensor, indicating a potential issue with the sensor or its connection.
The ABS control module receives signals from wheel speed sensors to monitor the speed of each wheel. Code C1216 indicates that the signal from the left rear wheel speed sensor is not consistent with expected values, suggesting a potential fault in the sensor or its wiring.
• ABS warning light illuminated
• Inconsistent braking performance
• Traction control issues
• Faulty left rear wheel speed sensor
• Damaged wiring or connectors
• Malfunctioning ABS control module
ABS: Anti-lock Braking System
OBD-II: On-Board Diagnostics, Second Generation
• Inspect the left rear wheel speed sensor for damage.
• Check the wiring and connectors for corrosion or breaks.
• Test the sensor's output with a multimeter.
• Replace the left rear wheel speed sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ABS control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regularly inspect wheel sensors and wiring.
• Keep the wheel area clean to prevent debris buildup.
• Perform routine maintenance checks.
Sensor Issue
• Avoid harsh braking until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
• Do not ignore the ABS warning light.
Check with the vehicle manufacturer for warranty coverage on ABS components.
C1216 is a common code for vehicles with ABS systems, often related to sensor or wiring issues.
Moderate – While the car is still drivable, the ABS system may not function properly, affecting braking performance.
Driving with a malfunctioning ABS system can increase stopping distances and reduce vehicle control in emergency situations.
• Vehicle on a flat surface
• Ignition in the 'On' position
The left rear wheel speed sensor is located near the brake rotor of the left rear wheel.
Q: Can I drive with a C1216 code?
A: While the car can still be driven, it's important to fix the issue as soon as possible to ensure the ABS system functions correctly.
Q: How do I reset the ABS light?
A: After repairing the issue, the ABS light can be reset with an OBD-II scanner.
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.
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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.
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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.
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