U0418
Invalid Data Received from Brake System Control Module
The Brake System Control Module is present on the data bus but the values it reports are implausible — out of range, frozen, or failing the checksum or rolling-count check. The receiving modules reject the data. ABS and ESP functions are limited. Causes include a faulty sensor feeding the module, internal computation errors, a software or calibration mismatch after a repair, or bus interference corrupting the frames.
The Brake System Control Module is present on the data bus but the values it reports are implausible — out of range, frozen, or failing the checksum or rolling-count check. The receiving modules reject the data. ABS and ESP functions are limited. Causes include a faulty sensor feeding the module, internal computation errors, a software or calibration mismatch after a repair, or bus interference corrupting the frames.
Common causes
- medium
Brake module internal fault
A plausible cause — test and verify before replacing parts.
Typical part cost: $110-2200
- medium
CAN corruption causing checksum errors
A plausible cause — test and verify before replacing parts.
Typical part cost: $110-2200
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does U0418 mean?
U0418 means "Invalid Data Received from Brake System Control Module". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0418?
brake module internal fault; can corruption causing checksum errors; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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