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P2768 is a diagnostic trouble code (DTC) for "Input/Turbine Speed Sensor B Circuit Intermediate". 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 diagnostic. 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.
The P2768 code is stored when the powertrain control module (PCM) receives an input signal from the turbine speed sensor that is in erratic, irrational, or in some other way incorrect or unusable. Without the proper signal from the turbine speed sensor, the transmission is unable to provide a working shift strategy. In the case of P2768, a car with multiple sensors will have an intermittent malfunction in Sensor B.
The PCM “expects” the input speed from the turbine speed sensor to increase gradually until it reaches a shift point, at which time the transmission will shift. A varying, erratic, or irrational signal (or a complete lack of signal) will cause the P2768 code to be stored, as the transmission will be unable to determine when or how to shift, and a Malfunction Indicator Light (MIL) will be illuminated.
There are a few things that commonly cause a P2768 code to be stored, including:
The first and most noticeable symptoms that a driver will detect include:
In all cases a Check Engine Light or MIL will illuminate, and in some rare cases this will be the only symptom.
A mechanic diagnosing a P2768 code will use a scanner to detect other related codes. They will also inspect the wiring and circuits that connect the turbine speed sensor and look for transmission fluid leaks, which may have caused the problem to occur. After all codes are cleared, the mechanic will operate the vehicle to ensure that the codes remain clear and that the problem has been addressed.
The most common mistakes made when diagnosing a P2768 code include misdiagnosing the problem as:
Often, this results in unnecessarily replacing the vehicle speed sensor, which will not actually fix the problem at hand.
If a vehicle’s automatic transmission is not able to provide the proper shifting strategy while driving, the vehicle may stall at inopportune times, lose fuel efficiency, be unable to shift, and other problems may occur. Depending on the situation, these problems can be very serious. The driver may be put in danger, and the vehicle’s transmission and other systems may be further damaged, as well.
In some rare cases, the vehicle’s PCM may need to be repaired or replaced.
Failing to resolve the P2768 code can be detrimental to the vehicle and can put the driver in danger. Not only that, but if the P2768 code is still stored, the Check Engine Light will remain illuminated, and the vehicle may not pass an OBD-II emissions test. Thus, it is essential to have a professional mechanic diagnose and repair the problem so that the code is resolved and the vehicle is safe to drive once more.
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 1-800-701-6220.