What does P0852 Mean? The transmission manual shift shaft switch assembly, also known as the Internal Mode Switch (IMS), is a sliding contact switch attached to the manual shift shaft inside the transmission case. The Park/Neutral Position (PNP) Switch is integrated into the IMS and connects to the Transmission Control Module (TCM) lead-frame through a short wire harness. The 5 inputs to the TCM from the transmission manual shift shaft switch assembly indicate the transmission gear selector lever position. This information is used for engine start enable, engine controls as well as determining the transmission shift patterns. The state of each input is available for display on the scan tool. The five input parameters represented are Signal A, Signal B, Signal C, Signal P (Parity), and Signal N (Park/Neutral Start Signal). Park/Neutral Signal is sent from the Park/Neutral switch directly to the Engine Control Module (ECM) and is used for engine start enable. The Park/Neutral Signal circuit is not connected to the TCM internally; the circuit uses the TCM as a pass-through connector only. The ECM Park/Neutral diagnostic monitors the Park/Neutral Signal circuit to detect Low voltage when the ECM expects to see High voltage and High voltage when the ECM expects to see Low voltage. engine code P0852P0852 fixobd P0852dtc P0852obd code P0852obd2 P0852P0852 car codediagnostic code P0852car code P0852check engine code P0852fehlercode P0852P0852 fiatcodigo P0852codigo falla P0852P0852 kody b??dówcodigo de falla P0852 What are the common causes of P0852 ? By far the most common cause of this code is from a misadjusted transfer case range sensor. Other causes may include a defective range sensor, open, shorted, corroded, or otherwise damaged wiring and/or electrical connectors. If recent transmission repairs have been performed, suspect that the range sensor was not readjusted properly. Sensor retaining bolts should always be installed using thread locking compound to ensure proper torque longevity. Technicians also report the presence of excessive corrosion in the sensor connector as the cause of this code being stored. How do you troubleshoot P0852 ? With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. Searches related to P0852 - Park/Neutral Position Switch Circuit High Voltage p0851 code subaru manual transmission p0852 subaru outback p0852 subaru sti 2011 wrx p0852 p0852 brz subaru p0851 2010 subaru forester p0851
