Got code P0847 in my 13th year (4WD, 5 Speed Auto). Solving the problem by replacing the pressure sensor in transmission B (3rd gear). The seat was in front of the car. I took pictures of the sensor and circled the number "3” for additional verification - it indicates 3rd gear, the sensor to the right of it. It took about 30 minutes to finish. I also checked the transmission oil level after installation to make sure I didn't have a low level that was causing the sensor to malfunction.
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