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

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Cost of diagnosing the P2750 code

P2750 is a diagnostic trouble code (DTC) for "Intermediate Shaft Speed Sensor C Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light is on diagnostic inspection. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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.

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P2750

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Nazareth

26 years of experience
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Nazareth
26 years of experience
Mercedes-Benz CLA250 - Check Engine Light is on - Los Angeles, California
Polite and very professional! Nazareth quickly identified my car was suffering from low voltage issues and the battery was the problem. The reader was showing 8 volts hence why my car didn’t receive enough power to start, it needed 12v. My battery was 4 years old and never been changed. Thank you Nazareth!

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17 years of experience
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Cornelius
17 years of experience
Chevrolet Cobalt - Check Engine Light is on - Peachtree City, Georgia
He was very helpful with explaining what could lead to my check engine light being on. And helping clear my engine light.

Marco

28 years of experience
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Marco
28 years of experience
Nissan Maxima - Check Engine Light is on - Highland, California
Marco did a great job of finding the source of the problem and his recommendations were greatly appreciated.

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8 years of experience
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Juan
8 years of experience
Chevrolet Tahoe - Check Engine Light is on - Altamonte Springs, Florida
Juan was on time for both appointments. He was knowledgeable and polite and I will most definitely be requesting him for my next steps based on the quote he provided me for other issues I need to address. Excellent customer service and top notch repair work!


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