P0853 OBD Error Code: Problem & Solutions

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Hating the halts? error code P0853 flashing? Well, here’s all that you need to know about the error code P0853. This code pops up when an error has been detected in the drive switch input circuit by the PCM. The PCM receives data from the transfer case shift selector range sensor that is used to calculate the engine RPM, fuel delivery strategy, and engine timing, amidst the other things. This code P0853 is particularly valid to vehicles that have a four-wheel drive and an automatic transmission installed

It is observed that the driver and the engine computer (PCM) both are informed by the overdrive/tow switch whether if the vehicle is pulling anything so that the transmission can perform in accordance. The code P0853 sets in when the PCM receives an improbable signal from the switch.

What causes this problem with the Drive Switch Input Circuit?

As noted by far, a wrongly adjusted transfer case range sensor is said to be the most common cause triggering the code P0853. A defective range sensor, open, short circuited, corroded or otherwise defected wirings and connectors are the one of the other causes too. If the error fails to disappear even after recent transmission repairs have been performed, a misadjusted range sensor should be suspected and therefore it should be readjusted properly. In order to ensure an appropriate torque longevity, sensor retaining bolts should always be installed using a thread locking compound. The presence of excessive corrosion in the sensor connector is often reported by the mechanics as one of the other common causes leading to the code being stored.

1. Powertrain Control Module - Abbreviated PCM; this is an integral control unit. So, a defective one should be changed immediately.
2. Drive Switch - A loose or damaged drive switch can be troublesome. In order to fix your error code P0853, get your drive switch mended or restored immediately.
3. Shift Selector Range Sensor - Facing the error code P0853? An inferior quality shift selector range sensor can always be hazardous for the system also it is one of the primal causes behind the occurring of the error code P0853. Tune into Parts Avatar for supreme quality shift selector range sensor at economical prices.
4. RPM - want to fight the error code P0853? Well, fight that instantly by fixing your vehicle’s RPM.
5. Automatic Transmission Parts - Distorted automatic transmission parts can end up being the chief host inviting the error code P0853. So, replacing one can be one of the wisest decisions to avoid a problematic system.
6. Electrical Connectors - Weary and damaged connectors can often be problematic. So, to add some spark to your ride you definitely need the perfect quality electrical connectors offered at Parts Avatar. Isn’t that just the perfect deal?
7. Locking Compound - Having problems with the locking compound? Don’t you worry, Parts Avatar has it all. A faulty locking compound could end up being the root cause behind the error code P0853.

It is essential 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 P0853 here:

Common Symptoms

The symptoms leading to an error code P0853 being stored often include: A failed four-wheel drive engagement, extremely rough shifting, a shifting failure, falling fuel efficiency, an illuminated service engine soon lamp, and a stored code.

Here are some ways with the help of which you will be able to correct the OBD Code P0853:

• A wrongly installed or misadjusted transfer case range sensor should be readjusted
• A damaged transmission range sensor should be either restored or mended
• Any corroded, lose or short-circuited wirings or connectors should be repaired or replaced
• The corroded sensor connector should be mended too

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

• In order to successfully diagnose this error code-storing condition, a scanner (or code reader) and a digital volt/ohmmeter should be used as it will be quite helpful. The gear in which the transfer case is placed in is determined by the drive switch.
• It should be noted that a large number of drive switches are of a variable resistance variety.
• The transfer case shift shaft has the switch is located on it and the shift lever slides on over it.
• The range sensor pivot is moved to different contacts as when the shift lever moves (through the shift lever in the cockpit and the shifter cable).
• The different levels of voltage are registered by the PCM that are further regulated by the fluctuating levels of resistance in the switch contacts as the gears in which the transfer case shifter is positioned.
• The shift strategy, fuel delivery theory, engine ignition timing, and numerous other drivability functions are all assessed by the PCM.
• The PCM receives the transmission, ABS, and engine inputs, it determines whether or not the transfer case is in the accurate gear for the driving conditions and reacts with respect to the same. The system wiring, connectors, and components should be visually inspected. In order to ensure an accurate diagnosis, this is an essential step.
• Any open, short circuited, defective, or corroded components should be mended or restored as per the requirements and the system should be retested to make sure that repairs were successful. If the system wiring, connectors, and components appear to be functioning as per the specified order, the scanner should be connected to the diagnostic connector and all stored trouble codes and freeze frame data should be recorded.
• It should be noted that this information can be very helpful in diagnosing intermittent conditions that may have contributed to this code being stored.
• Next, the codes should be cleared and the vehicle should be test driven to see if the code reappears.
• You may have an intermittent condition if the code fails to return instantly.
• It can be quite a challenge to diagnose the Intermittent conditions and in severe cases, it may have to be allowed to worsen before a precise diagnosis can be made
• One should check for battery voltage and ground signals at the drive switch if the code immediately reappears.
• The digital volt/ohmmeter should be used to check for continuity (disconnect all related control modules from the circuit before checking circuit resistance or controller damage may occur) and resistance in both circuits if either the ground or battery voltage circuits are open.
• The system circuits/connectors should be repaired or replaced as required and the system should be examined to ensure that repairs were successful. then, one should carefully disconnect electrical connectors to all related controllers.
• It is highly recommended to use the manufacturer’s wiring diagram for the drive switch, and testing all the related circuits and the sensor for any resistance and continuity. The findings should then be compared to the manufacturer’s specifications.
• All the system circuitry, connectors, and/or components that fail to collate with manufacturer’s specs should be replaced or restored.
• Lastly, one should always retest the system to confirm a successful repair. If all circuits collate with manufacturer’s specifications, a damaged PCM should be suspected.
• It should be noted that a PCM failure is quite rare and in such a case, replacement will require reprogramming.