OBD Guide
ENFRDEESPT

U250B

Invalid Data Received From Active Safety Control Module 1 On Chassis Expansion CAN Bus

U250B is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Active Safety Control Module 1 On Chassis Expansion CAN Bus. Common causes: problems with the can bus, active safety module malfunction. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Check Engine Light Is On
  • Disabling active safety systems
  • Errors in the operation of driver assistance systems
  • Reduced functionality of electronic systems
  • Problems with cruise control

Causes

  • Problems with the CAN bus
  • Active safety module malfunction
  • Wiring harness damage
  • Software error in the ECU
  • Module power problems

How to Fix

  1. Check the integrity of the CAN bus
  2. Diagnose the active safety module
  3. Check connections and wiring harness
  4. Update ECU software
  5. Repair only from an authorized dealer

Related codes

U250AU250CU2510

FAQ

What does the U250B code mean?

U250B is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Active Safety Control Module 1 On Chassis Expansion CAN Bus

What causes a U250B error code?

The most common causes of U250B include: Problems with the CAN bus; Active safety module malfunction; Wiring harness damage; Software error in the ECU.

How do I fix a U250B diagnostic trouble code?

To fix U250B: Check the integrity of the CAN bus. Diagnose the active safety module. Check connections and wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U250B?

Do not drive — repair immediately

How much does it cost to fix U250B?

The estimated repair cost for U250B is $56–222. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat