OBD Guide
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B2461

Auxiliary Heater Flame Sensor Circuit Open

B2461 is an OBD-II diagnostic trouble code meaning: Auxiliary Heater Flame Sensor Circuit Open. Common causes: broken sensor wires, oxidation of contacts in the connector. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Auxiliary heater does not work
  • Error indication on the instrument panel
  • Reduced comfort in the cabin in winter

Causes

  • Broken sensor wires
  • Oxidation of contacts in the connector
  • Flame sensor malfunction
  • Wiring harness damage
  • Problems with the heater control unit

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Clean the contacts in the connectors
  3. Test sensor resistance
  4. Replace the resistance sensor
  5. Check the power supply to the sensor circuit

Related codes

B2460B2462

FAQ

What does the B2461 code mean?

B2461 is an OBD-II diagnostic trouble code that indicates: Auxiliary Heater Flame Sensor Circuit Open

What causes a B2461 error code?

The most common causes of B2461 include: Broken sensor wires; Oxidation of contacts in the connector; Flame sensor malfunction; Wiring harness damage.

How do I fix a B2461 diagnostic trouble code?

To fix B2461: Check the integrity of the sensor wiring harness. Clean the contacts in the connectors. Test sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2461?

Yes, but get it checked soon

How much does it cost to fix B2461?

The estimated repair cost for B2461 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat