OBD-II Network Error Code U0422: How to Fix It

Q: Can I drive with error code U0422?

You can usually drive short distances, but the error may cause various electrical systems to malfunction. Have it diagnosed promptly as it can affect safety systems like lights and electronic stability control.

Q: What causes BCM communication errors?

Common causes include low battery voltage, corroded connections, damaged CAN bus wiring, faulty BCM module, or interference from aftermarket electrical accessories.

Q: How much does it cost to fix U0422 error code?

Costs vary widely depending on the cause. Simple fixes like cleaning connections cost under $50, while BCM replacement can cost $300-800 including programming.

Q: Will error code U0422 cause my car to fail inspection?

Yes, most states will fail a vehicle with active communication error codes during emissions testing, even though this isn't directly an emissions-related code.

Abstract

Error code U0422 indicates that your vehicle's computer network is receiving invalid or corrupted data from the body control module (BCM). This communication error can affect various electrical systems in your vehicle including lights, windows, locks, and climate control.