Skip the auto shop - Our mechanics make house calls

P2750 OBD-II Trouble Code: Intermediate Shaft Speed Sensor C Circuit Range/Performance

Check Engine Light

P2750 code definition

When the powertrain control module (PCM) receives an input signal from intermediate shaft speed sensor C that is incorrect in any way, it will record the P2750 code and turn on the Check Engine Light.

What the P2750 code means

The PCM relies on a number of factors to provide an accurate and effective shifting strategy, among which is the input from the intermediate shaft speed sensors. If any of these sensors gives a bad, intermittent, or erratic signal, the PCM will not be able to determine the proper shifting strategy, and a code will be recorded. Code P2750 refers to sensor C.

What causes the P2750 code?

There are a few problems that can trigger a P2750 code, including:

  • A faulty output speed sensor
  • A faulty input speed sensor
  • A faulty intermediate shaft speed sensor
  • Open, shorted, or damaged wiring harness, circuit, or connector(s)
  • A faulty shift solenoid
  • A faulty engine drivability sensor
  • Contaminated or old transmission fluid
  • A faulty valve body
  • A faulty PCM (rare)

What are the symptoms of the P2750 code?

In addition to the Check Engine Light illuminating, the vehicle’s shifting may be delayed and/or harsh.

How does a mechanic diagnose the P2750 code?

After identifying the P2750 code and any related codes that the PCM has stored, the mechanic will begin with a visual inspection of all related parts and components. Starting with the wiring and connections, they’ll eliminate potential underlying causes for the code being stored, starting with the simplest, and moving on to more complex and expensive fixes. After each test and/or repair, they’ll clear all codes, restart the engine, and take the vehicle for a test drive to see if the code is resolved.

Common mistakes when diagnosing the P2750 code

Most commonly, the person attempting to diagnose the problem will make the mistake of assuming that it’s an issue with the engine misfiring, the fuel delivery system malfunctioning, or the vehicle speed malfunctioning. Another common misdiagnosis is the assumption that there’s something wrong with the internal workings of the transmission.

How serious is the P2750 code?

If your PCM is unable to deliver the proper shifting strategy, it can affect the drivability of your vehicle, as well as its fuel efficiency. Engine stalls and/or inappropriate shifts can also put you in potentially dangerous situations, as well.

What repairs can fix the P2750 code?

Depending on what’s actually causing the code to be stored, a range of repairs may resolve it, including:

Additional comments for consideration regarding the P2750 code

Even if your transmission is not making erratic shifts, appearing to misfire, and/or stalling while driving or idling, the P2750 code is indicative of a potentially serious problem that should not be left unresolved. Furthermore, if you do not resolve this issue, the Check Engine Light will remain on, which will mean that your vehicle cannot legally pass an OBD-II emissions test, making it impossible to renew your registration.

Need help with a P2750 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: the car has suffocation feeling when accelerator is pressed and does not speed constantly

This sounds like a low fuel pressure problem, or an air filter and mass airflow (MAF) sensor problem. Check the fuel pressure and replace the fuel filter first to see if it helps. Next, have the system computer scanned...

Q: Changed battery, now the engine "chugs" at idle and while accelerating

If you disconnected or connected the battery with the key on or any accessory activated then you may have damaged the computer of the car. Firstly, have the Check Engine Light scanned to see what code is stored in memory....

Q: Car would self stall even in neutral

The fault codes should be read out to determine the exact nature of the fault. I believe the mechanic you consulted was talking about the camshaft timing solenoid. While this could cause a stalling to occur when coming to a...