OBD Guide
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B2468

Auxiliary Heater Coolant Pump Circuit Short to Ground

B2468 is an OBD-II diagnostic trouble code meaning: Auxiliary Heater Coolant Pump Circuit Short to Ground. Common causes: wiring harness damage, short circuit in the pump circuit. Estimated repair cost: $56–167.

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

Symptoms

  • Auxiliary heater does not work
  • Poor interior heating
  • Check Engine Light Is On

Causes

  • Wiring harness damage
  • Short circuit in the pump circuit
  • Auxiliary heater pump malfunction
  • Oxidation of contacts
  • Problems with the heater control unit

How to Fix

  1. Check wiring harness for damage
  2. Check the pump circuit with a multimeter
  3. Replace auxiliary heater pump if necessary
  4. Clean or replace oxidized contacts
  5. Check the heater control unit

Related codes

B2467B2469

FAQ

What does the B2468 code mean?

B2468 is an OBD-II diagnostic trouble code that indicates: Auxiliary Heater Coolant Pump Circuit Short to Ground

What causes a B2468 error code?

The most common causes of B2468 include: Wiring harness damage; Short circuit in the pump circuit; Auxiliary heater pump malfunction; Oxidation of contacts.

How do I fix a B2468 diagnostic trouble code?

To fix B2468: Check wiring harness for damage. Check the pump circuit with a multimeter. Replace auxiliary heater pump if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2468?

Limited driving only, diagnose soon

How much does it cost to fix B2468?

The estimated repair cost for B2468 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat