OBD Guide

U0122

Lost Communication With Vehicle Dynamics Control Module

U0122 is an OBD-II diagnostic trouble code meaning: Lost Communication With Vehicle Dynamics Control Module. Common causes: open or short circuit in wiring harness, poor contact in vdc module connector. Estimated repair cost: $56โ€“278.

Severity
๐Ÿ”ด High
Can you drive?
Do not drive โ€” repair immediately
Approx. repair cost
$56โ€“278 (est.)

Symptoms

  • Check Engine Light Is On
  • Disabling the stabilization system
  • Disabling ABS
  • Other related errors appear
  • Deterioration of controllability in difficult conditions

Causes

  • Open or short circuit in wiring harness
  • Poor contact in VDC module connector
  • Malfunction of the vehicle dynamics module itself
  • Module power problems
  • Damage to the CAN bus

How to Fix

  1. Check the integrity of the wiring harness to the VDC module
  2. Inspect and clean the contacts in the connectors
  3. Check fuses and relays associated with the module
  4. Scan other modules for communication errors
  5. Repair only from an authorized dealer

Related codes

Error U0122 by Vehicle Brand

FAQ

What does the U0122 code mean?

U0122 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Vehicle Dynamics Control Module

What causes a U0122 error code?

The most common causes of U0122 include: Open or short circuit in wiring harness; Poor contact in VDC module connector; Malfunction of the vehicle dynamics module itself; Module power problems.

How do I fix a U0122 diagnostic trouble code?

To fix U0122: Check the integrity of the wiring harness to the VDC module. Inspect and clean the contacts in the connectors. Check fuses and relays associated with the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U0122?

Do not drive โ€” repair immediately

How much does it cost to fix U0122?

The estimated repair cost for U0122 is $56โ€“278. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version ยท NationStat