OBD Guide
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C2311

Communication Error From HV ECU

C2311 is an OBD-II diagnostic trouble code meaning: Communication Error From HV ECU. Common causes: broken or damaged wiring harness between ecu and hv ecu, hv ecu malfunction. Estimated repair cost: $111–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–556 (est.)

Symptoms

  • Check Engine light comes on
  • Power reduction
  • Switching to emergency mode
  • Problems charging the hybrid battery

Causes

  • Broken or damaged wiring harness between ECU and HV ECU
  • HV ECU malfunction
  • HV ECU Power Problems
  • Corrosion or poor contact in connectors
  • Software error

How to Fix

  1. Conduct a visual inspection of the wiring harness and connectors
  2. Check power and ground of HV ECU
  3. Read extended trouble codes using a diagnostic scanner
  4. Check HV ECU for internal faults
  5. Replace damaged components or wiring harness as necessary

Related codes

U0100U0101P0A80

FAQ

What does the C2311 code mean?

C2311 is an OBD-II diagnostic trouble code that indicates: Communication Error From HV ECU

What causes a C2311 error code?

The most common causes of C2311 include: Broken or damaged wiring harness between ECU and HV ECU; HV ECU malfunction; HV ECU Power Problems; Corrosion or poor contact in connectors.

How do I fix a C2311 diagnostic trouble code?

To fix C2311: Conduct a visual inspection of the wiring harness and connectors. Check power and ground of HV ECU. Read extended trouble codes using a diagnostic scanner. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C2311?

Limited driving only, diagnose soon

How much does it cost to fix C2311?

The estimated repair cost for C2311 is $111–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat