P2861 code meaning
Shift Fork B Actuator Circuit Low
Powertrain system Generic code P28xx codes Check engine light
What P2861 means
P2861 is set when a fork B actuator line reads near ground although the module has not switched it there, the classic signature of a short to ground. Ford's 2012 DPS6 summary assigns exactly this case on the motor of the drum for reverse and the even gears to P2861, and the 2014 Ford catalogue marks it as a MIL fault. Look for a motor phase rubbed through on a bracket, corrosion bridging a terminal to the shield, or a winding that has contacted the motor housing. The other circuit faults on this motor are kept apart: P285F for an open lead, P2862 for a short to battery voltage, P2836 for the driver chip. Once the output is disabled, the car typically drives on in gears 1, 3 and 5 only, without reverse.
P2861 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2861
- Reverse not selectable
- Engine lamp on, only odd gears in use
Common causes of P2861
- Most likelyFork B motor lead rubbed through on a bracket or the case
- PossibleCorrosion bridging a terminal to ground in the connector
- PossibleFork B motor winding shorted to its housing
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Shift fork actuator bWiring harnessTCM
What each part of P2861 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 8 | Area: transmission. |
| 61 | The exact fault in that area. |
What to do next
- Note P2861 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 P2861
What does P2861 mean?
P2861 means "Shift Fork B Actuator Circuit Low". P2861 is set when a fork B actuator line reads near ground although the module has not switched it there, the classic signature of a short to ground. It is a generic code, so it means the same on every make.
Is it safe to drive with P2861?
Drive gently and only to a workshop. With P2861 the car can go into limp mode (reduced power) to protect itself.
Will P2861 fail an emissions test?
Yes, it can. P2861 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2861 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2861 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.