P0AB8 code meaning
Engine Mount B Control Circuit High
Powertrain system Generic code P0Axx codes Check engine light
What P0AB8 means
With P0AB8 the controller finds the control circuit of active engine mount B at too high a level, for example because the line has a short to battery voltage or the driver cannot pull it down. Ford names the code in its 2020-23 gasoline OBD summary as the bank 2 high fault of the active-mount circuit check, which runs continuously and needs about 5 seconds of driver-reported fault before a code is stored. Honda's 2008 Pilot uses the B codes for the rear mount actuator. The open circuit is P0AB6, the low side P0AB7, and the mirror code for mount A is P0A16. Consequences are comfort-related: the mount stays in its default state and vibration rises at idle.
P0AB8 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 P0AB8
- Check engine light on
- Rougher feel at idle and when pulling away
Common causes of P0AB8
- Most likelyControl wire shorted to a battery-voltage circuit
- PossibleMount actuator defective
- 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 P0AB8 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. |
| B8 | The exact fault in that area. |
What to do next
- Note P0AB8 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 P0AB8
What does P0AB8 mean?
P0AB8 means "Engine Mount B Control Circuit High". With P0AB8 the controller finds the control circuit of active engine mount B at too high a level, for example because the line has a short to battery voltage or the driver cannot pull it down. It is a generic code, so it means the same on every make.
Is it safe to drive with P0AB8?
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 P0AB8 fail an emissions test?
P0AB8 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 P0AB8 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 P0AB8 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.