Powertrain, generic · Hybrid propulsion

P0A15 Engine Mount A Control Circuit Low

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

The control circuit of switchable or active engine mount A shows a voltage or current below the expected level, which usually points to a short to ground on the line or inside the actuator. Ford uses P0A15 in its 2020 to 2023 gasoline OBD summary for the active mounts: the low-level driver reports the fault and the PCM matures it after about 5 seconds; the partner mount B has P0AB7. Honda's active control engine mount system on the 2008 Pilot V6 assigns P0A15 to the front mount actuator and P0AB7 to the rear. Ford engineers describe these mounts as switched between a damping and a stiffening mode, so a stuck mount is felt as vibration. The open circuit is P0A14, the high fault P0A16.

Likely causes

Control wire chafed on the engine or subframe and shorted to ground
Shorted coil in the mount actuator or solenoid, often after fluid leakage
Moisture in the mount connector

Symptoms

  • Noticeable vibration at idle or low speed
  • Warning light, depending on manufacturer
  • Cylinder deactivation may be suppressed

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–700
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

engine mount awiring harnessecm

Related codes

P0A14P0A16P0AB7P0AB6

References: fordservicecontent.com, fenderbender.com, patents.google.com.