P2561 – MIL Lighting Required for Air Conditioning Control Module

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P2561 Possible Causes

  • Issues with the A/C system
  • Faulty climate control module
  • Climate control module harness is open or short-circuited
  • Poor electrical connection in the climate control module circuit

How to Fix Code P2561

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light on (or service engine soon warning light)

P2561 Meaning

The Engine Control Module (ECM) monitors the climate control module for the malfunction indicator light (MIL) request signal. The ECM sets the OBDII code when the climate control module requests the ECM to activate the MIL.

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