A/C Refrigerant Distribution Valve Control Circuit Low
The P2612 code means the vehicle's onboard diagnostic system has detected: A/C Refrigerant Distribution Valve Control Circuit Low. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- hard
- Estimated cost
- $200 - $700 (parts and labor)
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Common Symptoms
- A/C distribution valve stuck in one position
- One zone hot while other is cold
- Check engine light on
- Climate control display may show error
Probable Causes (Ranked by Likelihood)
- Short to ground in valve control wiring Very High
- Valve actuator motor shorted internally High
- Corroded valve connector Moderate
- ECM driver pulled low Low
Frequently Asked Questions
Can I still use my A/C with P2612?
Yes, but cooling may be limited to one zone or area of the vehicle. The compressor still operates and provides some cooling.
Is this an expensive repair?
The valve itself is typically $100 to $300, but labor to access it can add significantly to the cost, especially if the dashboard must be partially removed.
Can moisture cause P2612?
Yes. Condensation around A/C components is common, and moisture in the valve connector can cause corrosion leading to short circuits.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Check valve control circuit for short to ground
-
Measure valve actuator motor resistance
-
Inspect valve connector for corrosion or water damage
-
Test ECM output to valve circuit
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Commonly Affected Vehicles
- 2012-2020 BMW X5
- 2010-2019 Mercedes-Benz E350
- 2014-2020 Lexus RX350
- 2011-2020 Audi Q5
Related Codes
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