OBD Guide
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B2460

Auxiliary Heater Flame Sensor Circuit Short to Ground

B2460 is an OBD-II diagnostic trouble code meaning: Auxiliary Heater Flame Sensor Circuit Short to Ground. Common causes: damage to the sensor wiring harness, short circuit to ground. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Auxiliary heater does not turn on
  • The heater is unstable
  • Check Engine light comes on
  • Decrease in interior heating efficiency

Causes

  • Damage to the sensor wiring harness
  • Short circuit to ground
  • Oxidation of sensor contacts
  • Flame sensor malfunction
  • Problems with the heater control unit

How to Fix

  1. Check wiring harness for damage
  2. Check the integrity of the sensor circuit
  3. Clean the sensor contacts from oxidation
  4. Check sensor resistance
  5. Replace sensor if necessary
  6. Check the operation of the heater control unit

Related codes

B2455B2465P0380

FAQ

What does the B2460 code mean?

B2460 is an OBD-II diagnostic trouble code that indicates: Auxiliary Heater Flame Sensor Circuit Short to Ground

What causes a B2460 error code?

The most common causes of B2460 include: Damage to the sensor wiring harness; Short circuit to ground; Oxidation of sensor contacts; Flame sensor malfunction.

How do I fix a B2460 diagnostic trouble code?

To fix B2460: Check wiring harness for damage. Check the integrity of the sensor circuit. Clean the sensor contacts from oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2460?

Limited driving only, diagnose soon

How much does it cost to fix B2460?

The estimated repair cost for B2460 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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