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for Ford, Lincoln and Mercury.

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655 Ford-enhanced codes on file

Code
B113D

The rear climate module sees a rear climate control switch stuck on

Category
Body
Severity
Body Warning Light
Applies to
Ford, Lincoln and Mercury models that use this code
Related
No single generic twin. See OBD Codes List

What it means

B113D. The rear climate module sees a rear climate control switch stuck on. A rear temperature or fan control may repeat on its own.

Findings, check these first

  • Sticking or faulty rear climate switch
  • Open or shorted switch wiring
  • Poor switch connector
  • Damaged switch resistor circuit
  • Faulty rear audio and temperature control module

Standard procedure

  1. Confirm the code and test the rear climate switch
  2. Inspect the switch and its connector
  3. Check the switch circuit for a short
  4. Verify the switch resistance readings
  5. Replace the failed switch or module after tests

Code lookup

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Sources and review

Review: checked against the recorded source material.

Source caveat: The autocodes snapshot carries the matching title but its cause and description blocks render empty. Identity rests on the engine-codes page plus the autocodes title.

Last updated 2026-09-29.

Report a correction for B113D. Include your vehicle, the issue and a source if you have one.

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