OBD Guide

P0AB6

Engine Mount B Control Circuit/Open

P0AB6 is an OBD-II diagnostic trouble code meaning: Engine Mount B Control Circuit/Open. Common causes: open or short circuit in the support control circuit, active motor mount fault b. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Increased engine vibrations
  • Rattling sounds from the engine compartment
  • Check Engine indicator on the dashboard
  • Deterioration in smoothness
  • Vibrations are especially noticeable at idle

Causes

  • Open or short circuit in the support control circuit
  • Active motor mount fault B
  • Connector problems or contact corrosion
  • Engine Mount Control Module Malfunction
  • Damage to the wiring harness in the engine compartment

How to Fix

  1. Check the integrity of the wiring to engine mount B
  2. Inspect connectors for corrosion or damage
  3. Check engine mount resistance (compare with specifications)
  4. If necessary, replace faulty active engine mount
  5. Reset the error code and check if it returns

Related codes

Error P0AB6 by Vehicle Brand

FAQ

What does the P0AB6 code mean?

P0AB6 is an OBD-II diagnostic trouble code that indicates: Engine Mount B Control Circuit/Open

What causes a P0AB6 error code?

The most common causes of P0AB6 include: Open or short circuit in the support control circuit; Active motor mount fault B; Connector problems or contact corrosion; Engine Mount Control Module Malfunction.

How do I fix a P0AB6 diagnostic trouble code?

To fix P0AB6: Check the integrity of the wiring to engine mount B. Inspect connectors for corrosion or damage. Check engine mount resistance (compare with specifications). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0AB6?

Yes, but get it checked soon

How much does it cost to fix P0AB6?

The estimated repair cost for P0AB6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat