P2746 OBD Error Code: Problem & Solutions

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Check engine light flashing on again? Don’t know what to do about it? Well, Parts Avatar is here for all your problems. We not only believe in providing our customers with premium quality products but also amazing services. So this little guide by Parts Avatar will definitely help you solve the error code P2746. This OBD-II code transmission may not shift properly is described as an intermediate shaft speed sensor “B” circuit range/performance.

For the correct gear to be engaged, the transmission control module (TCM) receives data on how fast the intermediate shaft is spinning from the intermediate shaft speed sensor. When an inaccurate signal is received by the TCM from this sensor, it cannot shift the vehicle from gear to gear properly as the vehicle needs to change speed and rates of acceleration as required. This code will be set by the engine control module (PCM) or the TCM.

What causes this problem with the Intermediate Shaft Speed Sensor B Circuit Range/Performance?

• Intermediate shaft speed sensor is faulty or damaged
• Electrical problems in the wires between the speed sensor and modules
• Internal ECM an/or TCM problem
• Other related sensors or solenoids which are faulty or damaged (including input shaft speed sensor, output shaft sensor, shift solenoid etc)
• The automatic transmission fluid (ATF) is low or dirty

1. Speed Sensor - Suddenly noticing all the instrument panel lights illuminated? See the error code P2745 flashing? If you want to get rid of this, you simply need to repair or replace your bad speed sensor
2. Powertrain Control Module - Fearing an error code P2743? A malfunctioning powertrain control module is likely to invite issues like a poorly running engine, increase in carbon emission, choking, stuttering and stalling of the engine. Well, to avoid these, we recommend a replacement or repair of the powertrain control module before it worsens the condition of the system.
3. Transmission Control Module - Having problems with the TCM? Well, it is likely to invite problems like shifting into high gears and rough idling. Looking for a new one? Don’t you worry, Parts Avatar has it all. Mend or restore your transmission control module before it ends up being the root cause behind the error code P2743.
4. Engine Control Module - Now get your error code P2743 fixed easily by simply changing your engine control module as this adversely affects the overall drivability of the vehicle.
5. Diagnostic Tools - Good quality diagnostic tools help greatly in diagnosing an error code accurately. Don’t have access to your own diagnostic tools? Log into Parts Avatar now!
6. Automatic Transmission Fluid - Delayed shifting, decrease in power and lack of acceleration are some of the most common problems encountered after the automatic transmission fluid is seen to be polluted. Now get your error code fixed with Parts Avatar now!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD code P2746 here:

Common Symptoms

• Hard shifting
• Many instrument panel lights illuminated
• Bad driveability
• Unstable engine speed

After you know the symptoms of your vehicle’s problem, it becomes easy to detect it and get started with solving it. So, next on our list is few common steps to correct this issue with your vehicle’s:

• Repair or replace a malfunctioning Intermediate shaft speed sensor
• Mend or restore an internal ECM an/or TCM problem instantly
• Other related sensors or solenoids which are faulty or damaged (including input shaft speed sensor, output shaft sensor, shift solenoid etc) should be repaired or replaced immediately
• Fix all the failed electrical wires between the speed sensor and modules
• It is essential to change dirty or low automatic transmission fluid (ATF) as per the requirements

There is no need to get strained if your OBD code is still flashing up as we are here at your service. Have a look at our superior variety of ECM, transmission control module, speed sensor, PCM, automatic transmission fluid, digital volt, ohmmeter, transmission fluid leak and many more. Now all your problems would vanish within no time.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2745 code to be stored:

Step 1:

The basic step before researching this code involves checking the transmission fluid level. Ensure that the fluid is clean and adequately filled. If not, address this issue first. Once the fluid has been taken care of, proceed to locating the intermediate shaft speed sensor.  Usually, these sensors are mounted directly to the transmission housing.

Removing one or more components such as the air cleaner and box, miscellaneous brackets, wires etc. may grant you access to the sensor from under the hood. It is advisable to ensure that the sensor and corresponding connector are in good working condition and fully connected.

Step 2:

This step involves an easily accessible speed sensor which should be removed and cleaned. The costs of this task is practically nothing and if the sensor’s pickup truck to be excessively dirty, removing it may rid you of your problems. Ensure that the sensor pickup is clean and use a brake cleaner and a rag incase it appears to be dirty. In many cases, the dirt and shavings can alter the sensor readings so ensure that yours is clean.

An important point that should be noted is that any signs of rubbing on the pickup may be indicative of insufficient spacing between the reluctor ring and the pickup. It is highly possible that the sensor malfunctioned and is now hitting the ring. If replacement sensor still doesn’t clear the ring, comply with the manufacture procedures for changing the pickup/reluctor gap.

Step 3:

You are required to test the sensor and its circuit. You will be required to use your multimeter and specific manufacturer specifications and measure various electrical values between the sensors pins in order to the test the sensor itself. A great hack to accomplish this task is to do these tests from the same wires but at the respective ECM or TCM connector pins. This will attest the integrity of the harness as well as the sensor being used.

Common Mistakes When Diagnosing The P2746 Code

Here we have listed a few common mistakes that should be avoided:

• Failure of intermediate shaft speed sensor
• Damaged or defective powertrain control module (PCM)
• Failure of transmission control module (TCM)
• Problems in wiring