OBD Guide
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B2611

ACC Relay

B2611 is an OBD-II diagnostic trouble code meaning: ACC Relay. Common causes: acc relay malfunction (burnt contacts, broken winding), open or short circuit in the relay control circuit. Estimated repair cost: $3–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$3–56 (est.)

Symptoms

  • Air conditioner won't turn on or off
  • The air conditioning compressor runs constantly regardless of the settings
  • The climate control system fault indicator is on
  • There is no cold air in the cabin when the air conditioning is on

Causes

  • ACC relay malfunction (burnt contacts, broken winding)
  • Open or short circuit in the relay control circuit
  • Oxidation of relay connector or mounting block contacts
  • Malfunction of the climate control control unit
  • Blown ACC circuit fuse

How to Fix

  1. Read climate control system error codes
  2. Find the ACC relay in the fuse box according to the specific vehicle diagram
  3. Check the relay: replace it with a known good one of a similar type or check with a multimeter
  4. Check the presence of power and control signal at the relay socket
  5. Check the air conditioner circuit fuse
  6. If the relays and fuses are OK, check the climate control control unit

Related codes

B2610B2612B2613B0900

FAQ

What does the B2611 code mean?

B2611 is an OBD-II diagnostic trouble code that indicates: ACC Relay

What causes a B2611 error code?

The most common causes of B2611 include: ACC relay malfunction (burnt contacts, broken winding); Open or short circuit in the relay control circuit; Oxidation of relay connector or mounting block contacts; Malfunction of the climate control control unit.

How do I fix a B2611 diagnostic trouble code?

To fix B2611: Read climate control system error codes. Find the ACC relay in the fuse box according to the specific vehicle diagram. Check the relay: replace it with a known good one of a similar type or check with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2611?

Yes, but get it checked soon

How much does it cost to fix B2611?

The estimated repair cost for B2611 is $3–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat