Fault Family System: Powertrain (P-Codes) 6 SAE Codes

Active Engine Mount Control

Diagnostic & Technical Explanation

Code P0A14 sets when the control module commands the electro-hydraulic engine/transmission mount's internal solenoid — which varies mount stiffness to cancel vibration during the engine start/stop transitions common in hybrid operation — and the driver circuit reports an open, a short, or a current level outside the expected window. The most common physical causes are a corroded or unseated connector at the mount, a chafed drive-circuit conductor in the engine-bay harness, and an internally failed solenoid coil inside the mount itself. Because the mount only actively adjusts during engine-off/engine-on transitions, a fault here often presents as increased vibration specifically during those transitions rather than at a steady idle or cruise.

These 6 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 6 times.

Codes in this family (6)

Code	Definition	Repair coverage
P0A14	Engine Mount A Control Circuit/Open	3 ranked fixes
P0A15	Engine Mount A Control Circuit Low	3 ranked fixes
P0A16	Engine Mount A Control Circuit High	3 ranked fixes
P0AB6	Engine Mount B Control Circuit/Open	3 ranked fixes
P0AB7	Engine Mount B Control Circuit Low	3 ranked fixes
P0AB8	Engine Mount B Control Circuit High	3 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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