OBD Guide
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U185D

Fuel Injector Control Module Lost Communication With Engine Control Module

U185D is an OBD-II diagnostic trouble code meaning: Fuel Injector Control Module Lost Communication With Engine Control Module. Common causes: open or short circuit in the communication circuit, faulty injector control module. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Difficulty starting the engine
  • Unstable idling
  • Reduced engine power
  • Increased fuel consumption
  • Check Engine Light Illuminates

Causes

  • Open or short circuit in the communication circuit
  • Faulty injector control module
  • Module power problems
  • Engine ECU malfunction
  • Poor contact in connectors

How to Fix

  1. Check the integrity of the wiring harness between the modules
  2. Check power and ground of injector module
  3. Inspect connectors for oxidation or damage
  4. Check the functionality of the injector module
  5. If necessary, replace the faulty module

Related codes

U185EU185FU1860

FAQ

What does the U185D code mean?

U185D is an OBD-II diagnostic trouble code that indicates: Fuel Injector Control Module Lost Communication With Engine Control Module

What causes a U185D error code?

The most common causes of U185D include: Open or short circuit in the communication circuit; Faulty injector control module; Module power problems; Engine ECU malfunction.

How do I fix a U185D diagnostic trouble code?

To fix U185D: Check the integrity of the wiring harness between the modules. Check power and ground of injector module. Inspect connectors for oxidation or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U185D?

Limited driving only, diagnose soon

How much does it cost to fix U185D?

The estimated repair cost for U185D is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat