P0847 OBD Error Code: Problem & Solutions

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Is OBD code P0847 flashing? Wondering what is P0847 code? OBD code P0847 relates to your vehicle’s transmission fluid pressure sensor/switch “B”. This error code indicates that there is problem with your transmission fluid pressure sensor switch “B” circuit being low. To know more about this error code, you will need to go through our following sections.

OBD error code P0847 is a generic OBD-II trouble code that relates to transmission fluid pressure “B” circuit. Here “B” represents one specific area of the transmission fluid pressure circuit. OBD error code P0847 will be set by your vehicle’s PCM when it detects that desired fluid level and the actual fluid level do not match.

What causes this problem with the Transmission Fluid Pressure Sensor/Switch “B” Circuit Low?

• Malfunctioning electronic pressure control solenoid
• Bad transmission fluid pressure sensor
• Dirty or contaminated transmission fluid
• Low transmission fluid levels
• Internal transmission mechanical issues
• Internal transmission having hydraulic blockages
• Bad hydraulic pump
• Faulty powertrain control module
• Faulty transmission control module

1. Transmission Control Module - If you need transmission control module to correct your obd error code P0847 then you can simply browse Parts Avatar Canada and get your hands on the best selection parts available.
2. Digital Voltmeter - If you need any of the DIY diagnostic tools such as digital voltmeter, to diagnose the issues with your cars. You can find them all with us.
3. Powertrain Control Module - OBD error code P0847 flashing? There is a chance that your PCM, itself is damaged and is demanding for a quick change. So, what are you waiting for? Buy a new one with us now.
4. Transmission Fluid Pressure Sensor - We have in stock high end transmission fluid pressure sensor for all makes and models. So, don’t waste time and get your hand on our best range of auto parts today.
5. Automatic Transmission Module - OBD error code P0847 flashing? There is a chance that your automatic transmission module damaged and is demanding for a quick change. So, what are you waiting for? Buy a new one with us now.
6. Engine Control Module - We have in stock wide selection of ECM specific to every make and model. You can shop them with us 24x7 in just one click.

Interested in knowing the symptoms to obd code P0847? If yes, then you have arrived at the right place. We at Parts Avatar have listed out few common symptoms associated with this fuel injector problem.

Common Symptoms

• Illumination of check engine light
• Severe transmission problems
• Transmission slipping
• Transmission overheating
• Transmission entering into limp in mode
• Failing torque converter clutch
• Fall in fuel efficiency

After understanding the symptoms and few common causes behind the OBD error code, we are here to help you out in understanding the ways and means to correct the issue. To solve any issue, you need to follow certain steps, and to solve OBD error code P0847, you will need to undergo the following replacements:

• Repair or replace the faulty electrical components in the transmission system
• If, transmission fluid level is low, make sure to top it up to desired levels
• Cleaning or fixing the hydraulic blockages in the transmission system
• Undergo electronic pressure control solenoid replacement
• Repair or replace the electronic pressure regulator
• Make sure to get rid of the faulty fluid pressure sensor
• Undergo hydraulic pump replacement
• Replace or reprogrammed the faulty powertrain control module

Apart from the fuel injector, you might need to undergo few more replacements. You might need Transmission control module, Digital voltmeter, Powertrain control module Transmission fluid pressure sensor, Automatic transmission module, PCM, ECM and many other parts. Where to get them from? Well, if you want quality parts, then we can prove to be your dream destination.

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

To diagnose this error code, you will need and advanced scanner, digital volt/ohmmeter, manual pressure gauge, a hydraulic pressure diagram, and a manufacturer's wiring diagram to properly diagnose a P0847 trouble code. Once you get hold of all these equipment’s you will need to follow the following steps:

First of all, refer to technical service bulletins specific to your vehicle’s make and model to help you understand the problem properly. This will not only help you to understand the specific issue but also help you to understand steps on how to fix it. Believe us it will save you a lot of time and money while diagnosing not only this code but for any other code too. Also, you should start your diagnosis with all the power related error code or with the multiple code diagnosis as it will help you in understanding the reasons behind the error code P0847. Next on your list to do is to locate transmission fluid pressure sensor/switch on your vehicle to begin with the specific diagnosis. It will likely be attached to your vehicle’s valve body side inside the transmission. Once you figure out its location, next step for you to do is to check the connectors and wirings for any loose ends, bare wires, rubbing, scraping, burn spots or melted plastics. Now, take the connector apart and inspect the terminals very carefully inside the connector. Make sure that they don’t look burnt or have a green tint indicating corrosion. Make use of an electrical contact cleaner and a plastic bristle brush if cleaning of the terminals needs to be cleaned. Let dry and apply electrical grease where the terminals contact.

Next step is to use a scan tool and clear all the existing trouble code from memory, and check if the P0847 code returns. In case it does not then the problem was mainly with the connectors only. In case it does return then the connections were most likely your problem. This is a common area of concern for this code, as the external transmission connections have the greatest number of issues with corrosion. In case the code returns, then you will need to inspect the TFPS sensor and all the related connectors and circuits. Turn off the key and disconnect the electrical connectors at the TFPS sensor. Now, connect the digital voltmeter either to the ground or to the low reference terminal at the TFPS sensor wiring harness connector. Also connect the red lead of the DVOM to the signal terminals at the TFPS sensor wiring harness connector.

Now, turn on the key and check for the manufacturer’s specifications. Make sure that the voltmeter reads either 12 volts or 5 volts. Wiggle the connections to check if they change. In case the voltage is incorrect, repair the power or ground wire, or replace the PCM/TCM. Now, if this test is passed then connect one lead of an ohmmeter to the signal terminal at the TFPS sensor and the other lead to the ground or low reference terminal at the sensor. Next, check for the manufacturer’s specifications on the resistance of the sensor to accurately test the resistance to pressure when there is no pressure applied to it. Again, wiggle the connector at the Transmission Fluid Pressure Sensor/Switch while monitoring the resistance. If the ohmmeter readings do not pass, replace the TFPS. If you still continue to get the P0847 error code in spite of passing all these prior tests then it is signaling a failed TFPS sensor, although a failed PCM/TCM could not be ruled out, nor could internal transmission malfunctions until the TFPS sensor had been replaced. If you are in doubt, we suggest you to seek help from a trained automotive diagnostician. PCM/TCMs must be programmed or calibrated to the vehicle in order to be installed correctly.

Common Mistakes When Diagnosing the P0847 Code

Make sure that while diagnosing this error code, you don’t overlook wiring, circuitry, hydraulic blockages, transmission fluid, and transmission fluid pressure sensor.