OBD Guide
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U2618

Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 6

U2618 is an OBD-II diagnostic trouble code meaning: Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 6. Common causes: open or short circuit in the can bus, battery energy management module (becm) malfunction. Estimated repair cost: $167–889.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–889 (est.)

Symptoms

  • Malfunction indicator light comes on
  • Reduced engine power
  • Problems with charging a high-voltage battery
  • Switching to emergency mode
  • Incorrect display of battery charge level

Causes

  • Open or short circuit in the CAN bus
  • Battery Energy Management Module (BECM) malfunction
  • Problems with Battery Interface Module #6
  • Corroded or damaged electrical connectors
  • Problems with power supply or grounding of modules

How to Fix

  1. CAN bus diagnostics for breaks and short circuits
  2. Checking power and grounding of both modules
  3. Inspecting and cleaning electrical connectors
  4. Checking module configuration and software
  5. Replacing a faulty module if necessary
  6. Repair only from an authorized dealer

Related codes

U2600U2610U2620U2630

FAQ

What does the U2618 code mean?

U2618 is an OBD-II diagnostic trouble code that indicates: Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 6

What causes a U2618 error code?

The most common causes of U2618 include: Open or short circuit in the CAN bus; Battery Energy Management Module (BECM) malfunction; Problems with Battery Interface Module #6; Corroded or damaged electrical connectors.

How do I fix a U2618 diagnostic trouble code?

To fix U2618: CAN bus diagnostics for breaks and short circuits. Checking power and grounding of both modules. Inspecting and cleaning electrical connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U2618?

Do not drive — repair immediately

How much does it cost to fix U2618?

The estimated repair cost for U2618 is $167–889. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat