OBD Guide
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U15E1

Radio Lost Communication With HVAC Controls/Info Display Module On LIN Bus

U15E1 is an OBD-II diagnostic trouble code meaning: Radio Lost Communication With HVAC Controls/Info Display Module On LIN Bus. Common causes: open or short circuit in lin circuit, wiring harness damage. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Climate control does not work
  • No temperature display on display
  • Periodic system failures
  • Error message on the dashboard
  • No response to climate control buttons

Causes

  • Open or short circuit in LIN circuit
  • Wiring harness damage
  • Climate control module malfunction
  • Problems with the head unit
  • Corrosion of contacts in connectors

How to Fix

  1. Check the integrity of the LIN bus with a multimeter
  2. Inspect connectors and wiring harness for damage
  3. Check the power and ground of the climate control module
  4. Flash or replace the head unit
  5. Replace the climate control module if necessary

Related codes

U15E0U15E2U0151

FAQ

What does the U15E1 code mean?

U15E1 is an OBD-II diagnostic trouble code that indicates: Radio Lost Communication With HVAC Controls/Info Display Module On LIN Bus

What causes a U15E1 error code?

The most common causes of U15E1 include: Open or short circuit in LIN circuit; Wiring harness damage; Climate control module malfunction; Problems with the head unit.

How do I fix a U15E1 diagnostic trouble code?

To fix U15E1: Check the integrity of the LIN bus with a multimeter. Inspect connectors and wiring harness for damage. Check the power and ground of the climate control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U15E1?

Yes, but get it checked soon

How much does it cost to fix U15E1?

The estimated repair cost for U15E1 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat