P2747 code meaning
Intermediate Shaft Speed Sensor B Circuit No Signal
Powertrain system Generic code P27xx codes Check engine light
What P2747 means
P2747 is meant for the case where sensor B stays silent although the car is clearly moving. No manufacturer documents P2747 publicly. Ford's 2024 summary describes exactly this test for its intermediate sensors – vehicle inferred to be driving under positive torque, yet the sensor shows under 250 rpm lasting 2.5 s – but for sensor B it names only P2745, P2746 and P2748, so Ford apparently files missing pulses elsewhere. For the older single-sensor layout, Ford's 2012 strategy flags the intermediate shaft below 250 rpm for 5 s with turbine and output turning. Typical reasons are a sensor that has died internally, an open supply, or a reluctor that no longer passes the sensor. The module substitutes a calculated speed or goes into limp mode.
P2747 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P2747
- Warning lamp and transmission message while driving
- Limp-home mode, often stuck in one gear
- Rough or missing upshifts
Common causes of P2747
- Most likelySensor B failed internally and delivers no pulses
- PossibleOpen supply or signal wire, unplugged connector
- Less likelyReluctor ring displaced or sensor not seated in its bore
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Intermediate shaft speed sensor bTone wheel
What each part of P2747 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| 47 | The exact fault in that area. |
What to do next
- Note P2747 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 P2747
What does P2747 mean?
P2747 means "Intermediate Shaft Speed Sensor B Circuit No Signal". P2747 is meant for the case where sensor B stays silent although the car is clearly moving. It is a generic code, so it means the same on every make.
Is it safe to drive with P2747?
Drive gently and only to a workshop. With P2747 the car can go into limp mode (reduced power) to protect itself.
Will P2747 fail an emissions test?
Yes, it can. P2747 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 P2747 to fix?
Difficulty: hard. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P2747 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.