Guide To P2755 OBD Error Code Solutions

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The trouble code P2755 can be defined as Transmission Fluid Cooler Control Circuit High. The transmission fluid cooler control circuit signal is being monitored by the engine control module. This trouble code would be set by the ECM when the transmission fluid cooler control circuit signal would not be as per the specifications set by the manufacturer.

The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile. It is the transmission fluid cooler which protects the transmission fluid from getting extremely hot.  There are a few vehicles where the transmission must reach a minimum operating temperature before fluid will go through the cooler. Now if the cooler would not operate as per the request, then the P2755 fault code would start appearing.

What causes this problem with the Transmission Fluid Cooler Control Circuit High?

• Malfunctioning automatic transmission cooler control valve
• Automatic transmission cooler control valve harness might be open or little 
• Substandard electrical connection in the automatic transmission cooler control valve circuit

1. Engine Control Module - It is not always the components, but the ECM that can also be faulty. It can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
2. Fluid Pump - If the fluid pump is physically damaged, it can result in leakage, loss of pressure and harsh shifting. Thus, the fluid pump must be replaced, if found damaged. Buy new fluid pump from us now!
3. Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases and thus needs through checks for system and software errors. Thus, check and replace it, if required.
4. Automatic Transmission Module - Sometimes the transmission module is unable to communicate or correctly anticipate the speed of the vehicle and thus creates difficulty in gear shift leading to sluggish acceleration, throttle response and stalling. Thus, can also hamper a lot of components physically and thus must be checked and replaced, if required.
5. Electronic Control Unit - The ECU manages the cooling system to control the battery operating temperatures and thus must be replaced if found faulty. Thus, buy new ECU modules and components from us!
6. Fuel Injector - Affected fuel injectors can cause reduced performance and throttle response. It can also affect the fuel economy and affect the engine emission. Thus, replace faulty fuel injector now!
7. Diagnostic Tool - Make use of quality diagnostic tools to resolve any OBD error code. Buy quality diagnostic tools from us!

Willing to know some common symptoms of OBD Trouble Code P2755? Your wish is our demand. Have a look at them below:

Common Symptoms

• Visibility in the check engine light
• Stiff, inconsistent shifting or “gear hunting”
• An error code might be stored

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P2755:

• Repair or replace the quirky PCM/ECM
• Rehabilitate the defaults in the automatic transmission cooler control valve
• Carefully adjust the faults in the automatic transmission cooler control valve harness
• The automatic transmission cooler control valve circuit should be restored to working order

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade pcm, ecm, ohmmeter, body control module, transmission control module, fuel pump control module, traction control module,  automatic transmission cooler control valve, automatic transmission cooler control valve harness, fuel injector control module, automatic transmission module, injector pump, fuel pump control module, transmission control system parts, fuel pressure control module and a lot more for our precious customers.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

If you want to diagnose this error code, then you will need a suitable scanner (or code reader), a digital volt/ohmmeter, and possibly an oscilloscope. Most OBD-II equipped automobiles utilize an output speed sensor to provide the PCM with a transmission output speed signal. There are a lot of models where the sensor either threads directly into the transmission housing or is mounted to the exterior of the transmission housing using bolts. The design of the sensor is electromagnetic and it utilizes a reluctor ring (or a specialized set of splines) on the output shaft as reference points. As the output shaft is turned (by the engine) the electromagnetic output speed sensor would use the spaces between the splines to provide voltage signal interruptions in the circuit. Then these interruptions would be received by the PCM as square waveform patterns of varying degrees of voltage and translated into transmission output speed. After that the powertrain control module will compare transmission output speed data with engine input speed data to decide shift patterns, as well as certain engine drivability functions. The typical output speed sensor utilizes a three-wire connector but inspect the vehicle manufacturer’s wiring diagram to confirm the specific design of the vehicle. The initial wire is a reference voltage signal (usually 5-volts), the second wire will normally be a ground wire, and the signal wire would be the third wire. As the reluctor ring passes by the electromagnetic sensor, the 5-volt reference signal is completed with the protruding metal surfaces. The recessed surfaces of the reluctor provide voltage interruptions and these interruptions are input to the PCM via the signal wire. You must start your diagnosis with a visual inspection of system wiring, connectors as well as components. Repair or replace any open, shorted, damaged, or corroded items as per the requirement and then the entire system should be retested to make sure that repairs were successful. Pay specific attention to wiring and connectors that have been contaminated because of engine oil or leakage in the transmission fluid, burned on hot exhaust pipes, or defected due to road debris. If the system wiring, connectors as well as constituents appear to be in normal working order, then the scanner should be connected to the diagnostic connector and record all stored trouble codes as well as freeze frame data. This information can prove to be very helpful in diagnosing intermittent conditions that may have contributed to this code being stored. Now once all the codes have been cleared, then the automobile should be operated to check if the code is returning back again or not. If the code fails to immediately return, then it would indicate that there is an intermittent condition. Intermittent conditions can prove to be quite challenging to diagnose and in some cases it should be allowed to worsen before a right diagnosis can be made. If the code immediately returns, then the reference voltage and ground signals at the output speed sensor should be inspected. If either the reference voltage or ground circuits are open, then utilize the digital volt/ohmmeter to inspect for continuity (disconnect all associated control modules from the circuit before inspecting circuit resistance or controller damage may occur) and resistance in both circuits. Repair or replace system circuits/connectors as per the requirement and retest the system to ensure that repairs were successful. The manufacturer’s wiring diagram should be used for the output speed sensor, examine all associated circuits and the sensor for resistance and continuity and compare your findings with manufacturer’s specifications. Repair or restore system circuitry, connectors, and components that fail to coincide with specifications set by the manufacturer. It is very essential to retest the system to ensure a successful repair. If all system circuits are intact, then you should connect the oscilloscope and observe live transmission output speed sensor data. Carefully watch for glitches or “soft spots” in the waveform pattern and then repair or restore system circuitry, connectors, or components as per the requirement. If all circuits coincide with manufacturer’s specifications, and the waveform pattern is within acceptable limits, then it would mean that there are some faults in the powertrain control module. You must keep in mind that the failure in the PCM is very rare and replacement will need reprogramming.

Common Mistakes When Diagnosing The P2755 Code

• Some issues related to the transmission cooler
• There might be low transmission fluid
• Issues related to the wiring