P0AB6 code meaning
Engine Mount B Control Circuit/Open
Powertrain system Generic code P0Axx codes Check engine light
What P0AB6 means
Some engines sit on switchable or actively driven hydraulic mounts whose solenoid or actuator is energised by the engine controller. P0AB6 reports that the driver output for the second mount (B) sees an open or otherwise faulty circuit. Ford lists the code in its 2020-23 gasoline OBD summary under active mounts, assigns mount B to bank 2, monitors continuously and lets the low-level driver fault mature for about 5 seconds before storing it. On the 2008 Honda Pilot the same code covers the rear mount actuator. Mount A has the matching codes P0A14 to P0A16. Drivers mostly notice more vibration at idle or in cylinder-deactivation mode; the engine itself keeps running normally.
P0AB6 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0AB6
- Check engine light on
- Noticeable vibration at idle or with cylinder deactivation active
- Cylinder deactivation may be suspended on some models
Common causes of P0AB6
- Most likelyBroken or chafed control wire to the mount actuator
- PossibleCorroded or loose connector at the mount (splash zone)
- PossibleMount solenoid or actuator coil open internally
- Less likelyOutput driver in the engine controller defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine mount bWiring harnessECM
What each part of P0AB6 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| A | Area: hybrid propulsion. |
| B6 | The exact fault in that area. |
What to do next
- Note P0AB6 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0AB6
What does P0AB6 mean?
P0AB6 means "Engine Mount B Control Circuit/Open". Some engines sit on switchable or actively driven hydraulic mounts whose solenoid or actuator is energised by the engine controller. It is a generic code, so it means the same on every make.
Is it safe to drive with P0AB6?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0AB6 fail an emissions test?
P0AB6 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0AB6 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0AB6 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.