OBD-II Network Error Code U0122: How to Fix It

Q: Can I still drive my car with error code U0122?

You can drive short distances at low speeds, but avoid aggressive driving, highway speeds, or poor weather conditions. The stability control and traction control systems may not function, making the vehicle less safe in emergency situations.

Q: What causes OBD-II error code U0122?

Common causes include faulty wiring in the CAN bus network, a failed Vehicle Dynamics Control module, low battery voltage, corroded electrical connections, or damage to related control modules like the ABS unit.

Q: How much does it cost to fix error code U0122?

Repair costs vary widely depending on the root cause. Simple fixes like cleaning connections cost under $100, while VDC module replacement can cost $800-2000 including labor. Wiring repairs typically cost $200-600.

Q: Will U0122 cause my car to fail inspection?

Yes, in most states and countries, active diagnostic trouble codes related to safety systems like U0122 will cause your vehicle to fail emissions or safety inspections until the issue is resolved.

Q: Can a weak battery cause error code U0122?

Yes, low battery voltage or a failing alternator can cause communication errors between control modules. Always check battery and charging system health first, as this is often the easiest and least expensive fix.

Abstract

Error code U0122 indicates your vehicle has lost communication with the Vehicle Dynamics Control (VDC) module, which manages stability control and traction systems. This is a serious issue that can affect your vehicle's safety systems and should be addressed immediately.