P2794 - OBD Trouble Code

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The trouble code P2794 can be explained as Gear Shift Direction Circuit Low. Manual transmissions have a sensor built into the shift lever which would inform the engine computer (PCM) what gear the transmission is in. Now if the shift lever position sensor would send the PCM an improper signal, then it would give rise to P2794 error code. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

If the transmission control module would detect a variation in the voltage coming from the gate select direction circuit signal that is outside the parameters set by the automobile manufacturer, then it would store the P2794 error code. This would also give rise to the illumination of the check engine light.

What causes this problem with the Gear Shift Direction Circuit Low?

• Some issues related to the transmission shifter components
• Faulty range sensor
• Malfunctioning wires or electrical connectors

1. Engine Control Module - If there is any corrosion or breaks in the internal wiring of the harness, then it can cause a short in the ECM or can also cause corrosion in the ECM through the wiring harness. You can always rely on us as we have the best auto parts for our customers.
2. Powertrain Control Module - The onboard computer, or powertrain control module is the brain of the engine control system. Now if the brain is not working properly, then neither is the car engine. Get it replaced before the situation gets worse.
3. Transmission Fluid Pump - A failed transmission fluid pump can cause the fluid not being able to circulate in the transmission and the driver may smell the fuel burning. Thus, it might need immediate replacement.
4. Electronic Control Unit - Is your car jump starting on reverse polarity? Or are you facing some intermittent starting issues? If yes, then it indicates that your electronic control unit is bad. So it is very important to replace the defective electronic control unit with us at equitable prices.
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. You can always buy high grade manual transmission shifter from us online.
6. Diagnostic Tools - Buy quality diagnostic tools to check and diagnose OBD code P2794 error with the help of experienced mechanic. Visit us today! 

There could be countless symptoms that would accompany this fault code. Willing to know some common symptoms of OBD Trouble Code P2794? Your wish is our demand. Have a look at them below:

Common Symptoms

• Check engine light might come into signal
• Rough shifting
• Decreasing fuel efficiency

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• It is essential to restore the flawed transmission shifter harness
• Rehabilitate the corroded areas that may be affecting the gear shift
• Carefully adjust the faults in the shift lever assembly
• The transmission shifter should be restored to working order
• Recondition the non-functioning powertrain control module
• It is necessary to perform proper service of the unsound range sensor 

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of range sensor, transmission shifter, transmission shifter harness, powertrain control module, shift lever assembly, shifter cable, transmission control module, pcm, ecm, multimeter, tcm, body control module component, pcm module, ecm module and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2794 code to be stored:

• The mechanic or the technician will use a diagnostic scanner or code reader like DVOM to visually scan for the error codes in the vehicle. The gear shift direction sensor is utilized to decide (for the PCM) which gear the transmission is placed in at any given interval, as well as acting as a neutral safety switch for engine ignition. Keep in mind that many gate selection direction sensors are of a variable resistance variety. The switch is situated in or near the transmission shifter assembly. Now when the shift lever would be moved (via the shift lever in the cockpit and the shifter cable) the gate selection direction sensor pivot is moved to various contacts. The varying levels of voltage are read by the powertrain control module, regulated by the differing levels of resistance in the switch contacts, as the gears in which the transmission shifter are placed. The PCM would then decide the shift strategy, fuel delivery theory, engine ignition timing, and other drivability functions accordingly.
• As transmission, ABS, and engine inputs are received by the powertrain control module, it decides whether or not the transmission is in the correct gear for the driving conditions and reacts accordingly. You must start your diagnosis with a visual inspection of system wiring, connectors, and constituents. Make sure to 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. If the system wiring, connectors, and components appear to be in good working order, then you should connect the scanner to the diagnostic connector and record all stored trouble codes as well as the freeze frame data. This information can prove to be extremely helpful in diagnosing intermittent conditions that may have contributed to this code being stored.
• Now once all the codes have been cleared, then you should operate the vehicle to see if the code returns. If the code fails to immediately return, then you might have an intermittent condition. Intermittent conditions can prove to be quite challenging to diagnose and in extreme cases it should be allowed to worsen before a right diagnosis can be made. If the code returns back immediately, then you should check for battery voltage and ground signals at the gate selection direction sensor. If either the ground or battery voltage circuits are open, then utilize the digital volt/ohmmeter to check for continuity (disconnect all related control modules from the circuit before inspecting circuit resistance or controller damage may occur) and resistance in both circuits.
• Repair or restore system circuits/connectors as per the requirement and retest the system to ensure that repairs were successful. Use the manufacturer’s wiring diagram for the gate selection direction sensor, check all associated circuits and the sensor for resistance and continuity and compare your findings with specifications set by the manufacturer. Repair or replace system circuitry, connectors, and/or components that fail to coincide with specifications set by the manufacturer. The system should be retested to ensure a successful repair. If all circuits coincide with manufacturer’s specifications, suspect a faulty powertrain control module. Just remember that PCM failure is rare and replacement would need reprogramming.

Common Mistakes When Diagnosing The P2794 Code

• Many a times the technicians might replace the transmission gear shift direction sensor, when in reality this error can be corrected by just a simple adjustment.