P2838 - OBD Trouble Code

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The trouble code P2838 can be elucidated as Shift Fork "B" Position Circuit Low. This code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made from 1996 up to present. It’s also more common among Audi, Citroen, Chevrolet, Ford, Hyundai, Nissan, Peugeot, and Volkswagen vehicles. Two electric motors are utilized to shift the gears in the transmission, for gears 1-3-5 and one for gears R-2-4-6. The gear shifting is built by two shift drums which are connected to shift motor pinion via two ideal gears. The topmost shift force is 1500N (337 lb). The motors are non-segregated in the transmission control module (TCM) and work separately of each other. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model, powertrain configuration type, to another.

Want to learn something more about the P2838 fault code? It is the transmission which converts the power produced by the car engine to movement of the automobile. There are some transmissions which use the electric motors to change gears. Now if the transmission control module would decide that the transmission is not shifting in the right manner, then the P2838 error code would start appearing.

What causes this problem with the Shift Fork "B" Position Circuit Low?

• Out of date transmission control module (TCM) program
• There can be inoperative transmission control module (TCM)
• Transmission assembly might be flawed

1. Engine Control Module - Most of the time it is difficult to intercept the ECM faults and thus must be checked for thoroughly. There can be a problem with the circuit or the software might have malfunctioned. Thus repair, replace or reprogram the component as per requirement.
2. Powertrain Control Module - If the PCM is faulty, it can store wrong OBD codes and can lead to misdiagnosis. This can happen due to misinterpretation of data received from the various sensors and components which also affects the vehicle’s performance. Thus, replace it immediately.
3. Car Battery - The car battery can also be at fault and might have the problem of overcharging and fast discharging. This can cause increased temperatures and can also affect the functioning of various sensors like the speed sensor, temperature sensor and many more. Thus, replace faulty car battery today!
4. Transmission Fluid Pump Harness - Damaged transmission fluid pump harness can cause problematic transmission performance and can lead to transmission slipping, rough shifts, fuel leakages and delayed engagements. Buy new harness now!
5. Manual Transmission Shifter - If your manual transmission shifter is broken, then you will be able to move the shifter into any position, but keep in mind that the car transmission would stay in the exact same gear. Get it checked and replace if needed.
6. Electronic Control Unit - If the ECU is at fault, it will not be able to read the boost converter temperatures correctly leading to underperformance. Thus, replace faulty ECU now!
7. Diagnostic Tool - Choose from our diagnostic tools collection that will come in handy to detect and correct the OBD error code.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• The service engine soon light can start lighting up
• Transmission might not shift correctly
• The fuel consumption might start rising

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

• The malfunctioning transmission control module should be repaired or replaced as per the need
• Carefully adjust the faults in the engine control module
• The transmission assembly should be restored to working order

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 transmission control module, transmission gears, transmission assembly, auto transmission, pcm, ecm, tcm and many more. Now all your problems would vanish within no time.

Here are some steps which you should follow in order to diagnose this fault code:

If you have one of the signs of a bad gasket then it is generally not enough to prove a fault in the gasket, but a lot of symptoms are a result of failure in the gasket. So that’s why it is advisable to drive the vehicle as less as possible whenever there is an occurrence of symptoms. It all depends upon the symptoms, then you can always replace or repair the gasket as per the requirement.

The cost at which a gasket is replaced generally varies from one technician to another. It can be quite expensive to replace a gasket in modern engines due to their location and the amount of labour that is required to replace them. The error code P2838 reports a sensor failure and replacement of the sensor is unlikely to resolve the underlying problem. The error is most likely to be caused by the systems that the sensor is monitoring, but might even be caused sometimes by the wiring to the sensor itself.

Common Mistakes When Diagnosing The P2838 Code

• There can be some faults in the internal transmission
• There might be a need to calibrate the transmission control module (TCM)
• Transmission control module (TCM) software requires to be updated
• Negligence in the transmission control module
• Wiring problems