Error Code P2741: What It Means & What To Do?

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See the error code P2741? Here we have listed all that you need to know about the error code P2741. This OBD-II code transmission may not shift properly is described as a transmission fluid temperature sensor “B” circuit. The temperature of the fluid in transmission is determined by the transmission fluid temperature sensor which tells it to the engine control module (PCM). In case, a wrong signal from the transmission temperature sensor is detected by the PCM, this code will be set by the PCM.

For the purpose of determining the shift points, line pressure and torque converter clutch (TCC) control, the powertrain control module ((uses the signals produced by the transmission fluid temperature sensor (TFT) sensor. This sensor is situated in the transmission oil pan. The PCM further sends the TFT sensor a reference voltage (usually 5 volts). To send a return voltage signal to the PCM, it variates its internal resistance in relation to the transmission fluid temperature sensor. Also. it should be noted that these TFT sensors are a type of negative temperature coefficient (NTC) thermistor. This signifies that the internal resistance of the sensor shares an inverse relation to the oil temperature. Whenever the transmission fluid temperature rises, the TFT sensor signal voltage falls and vice versa.

What causes this problem with the Transmission Fluid Temperature Sensor "B" Circuit Range/Performance?

• Defective transmission fluid temperature sensor
• Faults in transmission
• Wiring issues
• Damaged PCM

1. Transmission Fluid Temperature Sensor - Short circuited transmission fluid temperature sensor can harm the overall performance of the engine along with an error code P2743. Tune into Parts Avatar for top notch transmission fluid temperature sensor offered as economical prices.
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. 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!

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P2741 code by listing out some major symptoms. They are mentioned below as follows:

Common Symptoms

• Check engine light is illuminated
• Incorrect torque converter clutch operation
• Delay in shifts or harsh shifts
• Vehicle getting stuck in limp mode

We have listed out some ways which would help you to correct the occurrence of OBD Code P2741. They are mentioned here as follows:

• Repair or replace a faulty transmission fluid temperature sensor
• Mend or restore all the damaged wiring
• Make sure all the faults present in the transmission are fixed
• A defective powertrain control module should be repaired or replaced

Parts Avatar Canada is here to solve all your issues related to car parts. We have stocked a wide range of best priced transmission fluid temperature sensor, PCM, temperature sensors, transmission temperature sensor, transmission control module, automatic transmission fluid and a lot more to help you out in fixing your car.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2741 code to be stored:

• One or more temperature sensors (generally two-wire variable resistance sensors) are installed in the automatic transmission which provide the PCM with information.
• The sensor is equipped with a voltage wire (usually it is a 5-volt reference signal) and a ground wire.
• The reference voltage wire is used by the PCM to monitor transmission temperature.
• Gradual increase in transmission temperature is accompanied by a decrease in sensor resistance and increases reference voltage.
• When the transmission is cool, sensor resistance is high, leading to a decrease in reference voltage to the PCM.
• Input reference voltage readings are received by the PCM as transmission temperature and reacts accordingly.
• Excessive transmission temperature leads to a code being stored and a service engine soon lamp is illuminated. When if the transmission over temp code is stored and the engine is not overheating, in that case a low or substandard transmission fluid condition should be suspected.
• For performing a careful inspection, any transmission leaks should be mended and you should ensure that the transmission is filled with the correct amount and type of fluid (incase the fluid lets off a burnt odour and you are qualified sufficiently to detect it, you may proceed and condemn the transmission).
• The next step would be to operate the transmission normally and checked again.
• In case of leaks originating from the front seal (behind the torque converter) might require the transmission to be removed, and at this time you may consider a rebuild of transmission incase the mileage dictates. If the transmission seems to be in good working condition and doesn’t exhibit any signs of overheating, it may indicate a defective transmission temperature sensor.
• There are a number of tools which will be essential in attempting a successful diagnosis of the conditions which cause this code to get stored.
• For performing a successful diagnosis, a suitable OBD-II scanner (or code reader) and a digital volt/ohmmeter will be instrumental.
• It will also be necessary to gain access to access a manufacturer’s wiring schematic for the successful diagnosis of this code. Perform a thorough visual inspection of all PCM wiring and connectors.
• Fix or replace the defective, disconnected, shorted or burnt wiring, connectors, and components as required.
• It is advisable to always retest the system after the necessary repairs have been made to ensure success. If all system wiring, connectors, and components (as well as fuses) seem to be in normal working condition, connect the diagnostic connector to the scanner (or code reader) and record all stored codes and freeze frame data.
• This data will be extremely useful for the diagnosis of intermittent conditions that may have caused this code to be stored.
• Proceed by clearing the code and operating the vehicle to check if it returns.
• This will be useful for determining whether the malfunction is intermittent or not. Once all the codes have been cleared, test drive the vehicle to check if the code returns.
• Failure of the code to return immediately may indicate an intermittent condition.
• Diagnosis of intermittent conditions may prove to be quite difficult and and in extreme cases it may have to be allowed to become worse before an accurate diagnosis can be conducted.
• Continue by disconnecting the electrical connector from the transmission temperature sensor and testing for reference voltage.
• This is generally 5-volts but refer to your manufacturer’s service manual to confirm.
• In case there is a 5-volt signal present with ignition turned to the run position, you are required to inspect the sensor ground wire.
• Also, if both ground signal and reference voltage are found, the sensor resistance should be tested using a manufacturer’ temperature to resistance chart.
• Test the sensor resistance with the help of the manufacturer’s temperature to resistance when both reference signal and the ground signal are present.
• Compare your analysis with the manufacturer’s specifications and replace the sensor in case of failure of sensor to comply. Well, if the sensor and voltage at the sensor are within manufacturer’ specifications, the PCM electrical connector should be disconnected and the circuit continuity and resistance between the sensor and the PCM should be tested.
• All the system circuitry and parts should be mended or restored as per the requirements and then retest the system. If in case, all the system circuitry and sensors are functioning in order, a fault in the PCM should be suspected. Also, a PCM failure is rare and PCM replacement will require reprogramming.

Common Mistakes When Diagnosing The P2741 Code

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

• Malfunction in the powertrain control module (PCM)
• A defective transmission control module (TCM)
• Damaged transmission temperature sensor
• Wiring defects in the system