OBD Guide
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B2999

A/C Compressor Delivery Valve

B2999 is an OBD-II diagnostic trouble code meaning: A/C Compressor Delivery Valve. Common causes: compressor solenoid valve malfunction, refrigerant leak. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced air conditioner efficiency
  • Complete failure of the air conditioner
  • Unusual noises when the air conditioner is operating

Causes

  • Compressor solenoid valve malfunction
  • Refrigerant leak
  • Problems with the wiring harness or electrical circuit
  • Mechanical damage to the valve

How to Fix

  1. Check the refrigerant level in the system
  2. Check the integrity of the wiring harness and connections
  3. Check the operation of the compressor solenoid valve
  4. If necessary, replace the valve or compressor

Related codes

B2998B3000

FAQ

What does the B2999 code mean?

B2999 is an OBD-II diagnostic trouble code that indicates: A/C Compressor Delivery Valve

What causes a B2999 error code?

The most common causes of B2999 include: Compressor solenoid valve malfunction; Refrigerant leak; Problems with the wiring harness or electrical circuit; Mechanical damage to the valve.

How do I fix a B2999 diagnostic trouble code?

To fix B2999: Check the refrigerant level in the system. Check the integrity of the wiring harness and connections. Check the operation of the compressor solenoid valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2999?

Limited driving only, diagnose soon

How much does it cost to fix B2999?

The estimated repair cost for B2999 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat