P2751 code meaning
Intermediate Shaft Speed Sensor C Circuit No Signal
Powertrain system Generic code P27xx codes Check engine light
What P2751 means
P2751 is reserved for a sensor C that sends no pulses at all while the vehicle is demonstrably under way. No manufacturer documents P2751 publicly. For comparison, Ford's intermediate shaft logic treats a reading below 250 rpm as missing – for 2.5 s on the 2024 ten-speeds, for 5 s on the 2012 transmissions – and it only runs once turbine and output speeds prove that the gearbox is turning. Unlike the circuit code P2749, nothing has to be electrically wrong: a sensor whose electronics have quit, or a toothed wheel that has shifted away from the sensor face, also ends in silence. Expect the module to switch to a substitute speed or a limp-home gear, and confirm on a test drive with the scan tool showing sensor C.
P2751 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 P2751
- Warning lamp during the drive
- Limp-home gear or missing shifts
Common causes of P2751
- Most likelySensor C electronics failed
- PossibleOpen circuit or disconnected plug
- Less likelyReluctor missing, loose or too far from the sensor
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 cTone wheel
What each part of P2751 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. |
| 51 | The exact fault in that area. |
What to do next
- Note P2751 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 P2751
What does P2751 mean?
P2751 means "Intermediate Shaft Speed Sensor C Circuit No Signal". P2751 is reserved for a sensor C that sends no pulses at all while the vehicle is demonstrably under way. It is a generic code, so it means the same on every make.
Is it safe to drive with P2751?
Drive gently and only to a workshop. With P2751 the car can go into limp mode (reduced power) to protect itself.
Will P2751 fail an emissions test?
Yes, it can. P2751 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 P2751 to fix?
Difficulty: hard. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P2751 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.