2013 2015 Altima And 2014 2016 Rogue Cvt Judder Dtc

2013 2015 Altima And 2014 2016 Rogue Cvt Judder Dtc 20132015 Altima and 20142016 Rogue CVT Judder and DTCs Diagnosis and Troubleshooting The Nissan Altima and Rogue models from 20132015 and 20142016 respectively are equipped with continuously variable transmissions CVTs that have been known to experience judder and associated diagnostic trouble codes DTCs This document aims to provide a comprehensive understanding of the underlying causes diagnostic procedures and potential solutions for resolving CVT judder in these vehicles Understanding CVT Judder CVT judder manifests as a vibration or shaking sensation felt in the vehicle particularly during acceleration or deceleration It is often accompanied by a noticeable clunking sound This phenomenon is caused by a mismatch in rotational speed between the CVTs input and output shafts leading to a jerky transmission of power Common DTCs Associated with CVT Judder P0740 Torque Converter Clutch Circuit Malfunction This code indicates a problem with the torque converter clutch solenoid or its associated circuitry The solenoid controls the lockup function of the torque converter which plays a crucial role in smooth acceleration and fuel efficiency P0741 Torque Converter Clutch System Performance Similar to P0740 this code points to a malfunction in the torque converter clutch system possibly due to a faulty solenoid worn clutch plates or low transmission fluid level P0743 Torque Converter Clutch Circuit Intermittent This code signifies an intermittent electrical fault in the torque converter clutch circuit often caused by loose wiring corrosion or a faulty sensor P0770 Transmission Fluid Temperature Sensor Circuit Malfunction A faulty transmission fluid temperature sensor can lead to inaccurate readings causing the transmission control unit TCU to misinterpret the fluids temperature and potentially cause judder P1740 Transmission Control System Malfunction Generic This code is a general indicator of a problem within the transmission control system which can be caused by various factors 2 including faulty sensors wiring issues or a failing TCU Troubleshooting CVT Judder 1 Visual Inspection and Basic Checks Transmission Fluid Level Begin by checking the transmission fluid level and condition Low fluid levels can lead to slipping and judder If the fluid is discolored burnt or smells foul it needs to be replaced External Components Inspect the transmission for any signs of leaks damage or debris Look for loose or worn hoses belts and connections Visual Examination of CVT If possible visually inspect the CVT for any obvious signs of damage or wear 2 Diagnostic Scan Tool Retrieve DTCs Use a scan tool to retrieve any stored DTCs These codes can provide valuable insight into the nature of the problem Live Data Monitoring Monitor live data parameters related to the CVT such as transmission fluid temperature torque converter clutch pressure and engine RPM This can help identify any inconsistencies or unusual readings 3 Common Components to Inspect Torque Converter Clutch Solenoid Test the solenoids electrical resistance and continuity using a multimeter Replace the solenoid if it fails the test or exhibits any signs of damage Torque Converter Clutch Plates If the torque converter clutch plates are worn or contaminated they can lead to slipping and judder Inspect for excessive wear or scoring Transmission Fluid Temperature Sensor Check the sensor for proper operation using a multimeter Replace if necessary Transmission Control Unit TCU If the TCU is faulty it can cause the CVT to malfunction However this is less common and should be considered as a last resort 4 Road Test Replicate the Judder Drive the vehicle to replicate the judder condition and note the specific circumstances under which it occurs Data Logging If available use a scan tool to log data parameters during the road test to identify potential patterns or trends Solutions and Repairs Transmission Fluid Flush and Replace Replacing the transmission fluid with fresh fluid can 3 sometimes resolve judder issues caused by contaminated or degraded fluid Torque Converter Clutch Solenoid Replacement If the solenoid is found to be faulty it needs to be replaced Torque Converter Clutch Plate Replacement Worn clutch plates should be replaced with new ones Transmission Fluid Temperature Sensor Replacement A faulty sensor needs to be replaced to ensure accurate temperature readings TCU Replacement In rare cases a faulty TCU may need to be replaced However this should be considered as a last resort after ruling out other potential causes Preventive Maintenance Regular Fluid Changes Following the manufacturers recommended transmission fluid change intervals is essential for maintaining optimal CVT performance Inspection of Components Regularly inspecting key CVT components such as the solenoid clutch plates and sensors can help identify potential problems early on Driving Habits Avoid aggressive acceleration and deceleration as this can put excessive stress on the CVT Conclusion CVT judder in the 20132015 Altima and 20142016 Rogue models can be a frustrating issue but it is often resolvable with proper diagnosis and repair By understanding the underlying causes following the troubleshooting steps outlined in this document and performing preventative maintenance owners can help ensure smooth and reliable CVT operation It is important to note that these steps are general guidelines and specific procedures may vary depending on the vehicles model year and engine configuration Always consult the manufacturers service manual for detailed information and specific instructions