OBD Guide
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U2400

Fuel Injector Control Module High Speed CAN Bus Off

U2400 is an OBD-II diagnostic trouble code meaning: Fuel Injector Control Module High Speed CAN Bus Off. Common causes: open or short circuit in the can bus, faulty injector control module. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Unstable engine operation
  • Increased fuel consumption
  • Possible misfires

Causes

  • Open or short circuit in the CAN bus
  • Faulty injector control module
  • Problems with power supply to the injector module
  • Corroded or damaged connectors
  • Software error in control module

How to Fix

  1. Check the integrity of the CAN bus and connections
  2. Check power and ground of injector module
  3. Inspect connectors for corrosion or damage
  4. Scan other modules for related errors
  5. If necessary, replace the injector control module

Related codes

U2401U2402U0100

FAQ

What does the U2400 code mean?

U2400 is an OBD-II diagnostic trouble code that indicates: Fuel Injector Control Module High Speed CAN Bus Off

What causes a U2400 error code?

The most common causes of U2400 include: Open or short circuit in the CAN bus; Faulty injector control module; Problems with power supply to the injector module; Corroded or damaged connectors.

How do I fix a U2400 diagnostic trouble code?

To fix U2400: Check the integrity of the CAN bus and connections. Check power and ground of injector module. Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U2400?

Limited driving only, diagnose soon

How much does it cost to fix U2400?

The estimated repair cost for U2400 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat