• ABS warning light on
• Traction control light on
• Brakes may not function as expected
• Faulty ABS control module
• Damaged wiring or connectors
• Faulty CAN bus communication line
ABS: Anti-Lock Braking System
ECU: Engine Control Unit
CAN bus: Controller Area Network bus, a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other in applications without a host computer.
• U0121
• U0420
This code means that your car's computer is having trouble talking to a part that helps control the brakes. It's like when two people are trying to talk on the phone, but the call keeps dropping.
The U0627 code indicates a communication error with the Anti-Lock Brake System (ABS) control module.
U0627 is a diagnostic trouble code (DTC) that signifies a lost communication with the Anti-Lock Brake System (ABS) control module. This means the vehicle's main computer (ECU) is not receiving signals from the ABS module as expected.
• Check for other codes that might indicate a specific issue.
• Inspect the wiring and connectors to the ABS module.
• Test the CAN bus communication line for faults.
• Repair or replace damaged wiring or connectors.
• Replace the ABS control module if faulty.
• Ensure proper communication on the CAN bus line.
• OBD-II scanner
• Multimeter
• Wiring diagram
$150 - $800
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain vehicle wiring.
• Perform routine diagnostic checks.
• Ensure ABS system updates are applied.
Communication Error
• Avoid driving at high speeds until the issue is resolved.
• Have the vehicle inspected by a professional mechanic.
• Do not ignore the ABS warning light.
Check with your vehicle manufacturer for warranty coverage on the ABS system.
This code has been reported in vehicles with complex electronic systems where communication errors can occur due to faulty wiring or module issues.
Moderate – It is important to address this issue to ensure proper brake function and vehicle safety.
Driving with a faulty ABS system can increase the risk of accidents. It is recommended to address this issue promptly.
• Vehicle at operating temperature
• System voltage within normal range
The ABS control module is typically located near the brake master cylinder or under the hood in the engine compartment.
Q: Can I drive with code U0627?
A: It's possible to drive, but it's not recommended as the ABS system may not function properly, affecting braking performance.
Q: How do I reset the ABS light?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code and reset the light.
