OBD Guide
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U1876

Drive Motor Control Module 1 Lost Communication With Engine Control Module

U1876 is an OBD-II diagnostic trouble code meaning: Drive Motor Control Module 1 Lost Communication With Engine Control Module. Common causes: broken or damaged can bus wires, poor contact in module connectors. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • The car goes into emergency mode
  • Reduced engine power
  • Gear shifting problems
  • Inability to start the engine

Causes

  • Broken or damaged CAN bus wires
  • Poor contact in module connectors
  • Engine control module malfunction
  • Drive control module problems
  • Corrosion or oxidation of contacts

How to Fix

  1. Check the integrity of the CAN bus
  2. Inspect and clean connector contacts
  3. Check power supply and grounding of modules
  4. Scan other modules for errors
  5. If necessary, replace the faulty module

Related codes

U1877U1878U1879

FAQ

What does the U1876 code mean?

U1876 is an OBD-II diagnostic trouble code that indicates: Drive Motor Control Module 1 Lost Communication With Engine Control Module

What causes a U1876 error code?

The most common causes of U1876 include: Broken or damaged CAN bus wires; Poor contact in module connectors; Engine control module malfunction; Drive control module problems.

How do I fix a U1876 diagnostic trouble code?

To fix U1876: Check the integrity of the CAN bus. Inspect and clean connector contacts. Check power supply and grounding of modules. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1876?

Do not drive — repair immediately

How much does it cost to fix U1876?

The estimated repair cost for U1876 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat