DTC P0746: Solenoide Presión Polea CVT Atascado en OFF – Honda Accord 2012-2017
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[{'start': '5.000', 'end': '9.556', 'text': "DTC code P0746 refers to the '"}, {'start': '9.556', 'end': '14.112', 'text': 'Continuously Variable Transmission Pulley Pressure Control Solenoid Valve Stuck'}, {'start': '14.112', 'end': '18.668', 'text': "OFF' on 2012-2017 Honda Accord models. This"}, {'start': '18.668', 'end': '23.224', 'text': 'indicates a problem with the Continuously Variable Transmission'}, {'start': '23.224', 'end': '27.780', 'text': '(CVT) system, specifically the solenoid responsible for regulating hydraulic pressure'}, {'start': '27.780', 'end': '32.336', 'text': 'to the drive pulley.  The'}, {'start': '32.336', 'end': '36.892', 'text': 'transmission pulley pressure control solenoid valve is vital to'}, {'start': '36.892', 'end': '41.448', 'text': 'ensuring smooth transmission operation by controlling the'}, {'start': '41.448', 'end': '46.004', 'text': 'amount of fluid pressure applied to the'}, {'start': '46.004', 'end': '50.560', 'text': 'CVT pulleys based on vehicle speed and demand.  A'}, {'start': '50.560', 'end': '55.116', 'text': 'malfunction of this solenoid can cause abnormal'}, {'start': '55.116', 'end': '59.672', 'text': 'transmission behavior, lack of acceleration, or slipping.'}, {'start': '59.672', 'end': '64.228', 'text': 'Hydraulic pressure measurement and control are crucial for'}, {'start': '64.228', 'end': '68.784', 'text': 'efficient power transfer and overall'}, {'start': '68.784', 'end': '73.340', 'text': 'vehicle performance.  It is important to diagnose this problem accurately, as it'}, {'start': '73.340', 'end': '77.896', 'text': 'can affect the drivability and safety of the vehicle.  The'}, {'start': '77.896', 'end': '82.452', 'text': 'troubleshooting process involves several steps to locate'}, {'start': '82.452', 'end': '87.008', 'text': 'the problem and apply the appropriate repairs.'}, {'start': '87.008', 'end': '91.616', 'text': 'DTC P0746 specifically indicates a malfunction in the continuously variable'}, {'start': '91.616', 'end': '96.224', 'text': 'transmission pulley pressure control solenoid valve'}, {'start': '96.224', 'end': '100.832', 'text': '.  This solenoid is responsible for regulating the hydraulic pressure'}, {'start': '100.832', 'end': '105.440', 'text': 'in the CVT.  Its function is crucial, as it helps'}, {'start': '105.440', 'end': '110.048', 'text': 'manage how much pressure is applied to the'}, {'start': '110.048', 'end': '114.656', 'text': 'drive pulley, which in turn influences'}, {'start': '114.656', 'end': '119.264', 'text': 'gear ratios and performance.  Located within the'}, {'start': '119.264', 'end': '123.872', 'text': 'transmission assembly, the solenoid interacts closely with other components such as'}, {'start': '123.872', 'end': '128.480', 'text': 'the transmission control unit.  When this solenoid is'}, {'start': '128.480', 'end': '133.088', 'text': 'stuck in the OFF position, it does not provide the necessary pressure,'}, {'start': '133.088', 'end': '137.696', 'text': 'disrupting normal operation of the CVT system.  This leads'}, {'start': '137.696', 'end': '142.304', 'text': 'to performance problems, as the required settings for'}, {'start': '142.304', 'end': '146.912', 'text': 'speed and torque are not met.  Accurately identifying problems'}, {'start': '146.912', 'end': '151.520', 'text': 'with this component can ensure efficient repair'}, {'start': '151.520', 'end': '156.128', 'text': 'and restore normal transmission function.  There'}, {'start': '156.128', 'end': '161.029', 'text': 'are several possible causes for DTC P'}, {'start': '161.029', 'end': '165.930', 'text': '0746 condition. First, a'}, {'start': '165.930', 'end': '170.830', 'text': 'faulty pulley pressure control solenoid valve can directly result in it being'}, {'start': '170.830', 'end': '175.731', 'text': 'stuck OFF, leading to a loss'}, {'start': '175.731', 'end': '180.632', 'text': 'of pressure regulation.  Additionally, wiring problems, such as short circuits'}, {'start': '180.632', 'end': '185.533', 'text': 'or open circuits, can disrupt the electrical signal necessary for'}, {'start': '185.533', 'end': '190.434', 'text': 'the solenoid to operate, creating a situation where'}, {'start': '190.434', 'end': '195.334', 'text': 'the solenoid cannot operate properly.  Another contributing factor may'}, {'start': '195.334', 'end': '200.235', 'text': 'be related to the condition of the transmission fluid;  If'}, {'start': '200.235', 'end': '205.136', 'text': 'the fluid is contaminated or at inappropriate levels, it may'}, {'start': '205.136', 'end': '210.037', 'text': 'not flow properly through the system.  Each of'}, {'start': '210.037', 'end': '214.938', 'text': 'these causes must be investigated to determine if the solenoid'}, {'start': '214.938', 'end': '219.838', 'text': 'itself, the wiring, or the fluid conditions are'}, {'start': '219.838', 'end': '224.739', 'text': 'responsible for the error.  A thorough diagnostic investigation will help clarify'}, {'start': '224.739', 'end': '229.640', 'text': 'the root cause and lead to effective repairs.'}, {'start': '229.640', 'end': '234.848', 'text': 'Symptoms associated with DTC P0746 can significantly impact'}, {'start': '234.848', 'end': '240.056', 'text': 'the driving experience.  Commonly reported problems include a'}, {'start': '240.056', 'end': '245.264', 'text': 'slipping transmission, which manifests as a sudden loss of'}, {'start': '245.264', 'end': '250.472', 'text': 'power during acceleration.  Drivers may also notice'}, {'start': '250.472', 'end': '255.680', 'text': 'inconsistent or unresponsive acceleration, leading to'}, {'start': '255.680', 'end': '260.888', 'text': 'challenges in maintaining desired speeds or smooth transitions.'}, {'start': '260.888', 'end': '266.096', 'text': 'Reduced performance is another prevalent symptom, as the vehicle struggles'}, {'start': '266.096', 'end': '271.304', 'text': 'to utilize power efficiently due to'}, {'start': '271.304', 'end': '276.512', 'text': 'improper hydraulic pressure.  These symptoms can vary in intensity, depending'}, {'start': '276.512', 'end': '281.720', 'text': 'on the severity of the problem with the solenoid valve.  Understanding'}, {'start': '281.720', 'end': '286.928', 'text': 'these symptoms helps technicians diagnose the problem'}, {'start': '286.928', 'end': '292.136', 'text': 'and determine if it is an isolated incident or'}, {'start': '292.136', 'end': '297.344', 'text': 'related to broader transmission issues.  Addressing'}, {'start': '297.344', 'end': '302.552', 'text': 'these symptoms promptly can prevent further damage and ensure'}, {'start': '302.552', 'end': '307.760', 'text': 'safe vehicle operation.'}, {'start': '307.760', 'end': '312.457', 'text': 'The first step in troubleshooting DTC'}, {'start': '312.457', 'end': '317.154', 'text': 'P0746 begins by turning the ignition switch to the'}, {'start': '317.154', 'end': '321.851', 'text': 'ON (II) position or pressing the engine start/stop button'}, {'start': '321.851', 'end': '326.549', 'text': 'to reach the ON mode.  This action prepares the'}, {'start': '326.549', 'end': '331.246', 'text': 'electrical systems and prepares the vehicle for diagnostics.  Next,'}, {'start': '331.246', 'end': '335.943', 'text': 'use the HDS, or Honda Diagnostic System, to clear'}, {'start': '335.943', 'end': '340.640', 'text': 'any existing DTCs.  This process resets the system and allows for'}, {'start': '340.640', 'end': '345.337', 'text': 'an accurate assessment of current conditions without interference from'}, {'start': '345.337', 'end': '350.034', 'text': 'previous fault codes.  After this, start the engine'}, {'start': '350.034', 'end': '354.731', 'text': 'to ensure all systems are operational and'}, {'start': '354.731', 'end': '359.429', 'text': 'to enable real-time monitoring.  It is crucial that'}, {'start': '359.429', 'end': '364.126', 'text': 'this initial step be performed correctly, as it lays the'}, {'start': '364.126', 'end': '368.823', 'text': 'groundwork for subsequent diagnostics and helps isolate whether the'}, {'start': '368.823', 'end': '373.520', 'text': 'P0746 code reappears during subsequent operational checks.'}, {'start': '373.520', 'end': '378.156', 'text': 'In the second troubleshooting step, you need to test drive'}, {'start': '378.156', 'end': '382.791', 'text': "the vehicle in 'D' or Drive mode to simulate"}, {'start': '382.791', 'end': '387.427', 'text': 'normal driving conditions.  Reaching a speed of 37 mph (60'}, {'start': '387.427', 'end': '392.063', 'text': 'km/h) is essential, as it activates the operational parameters that'}, {'start': '392.063', 'end': '396.698', 'text': 'the CVT normally navigates.  As you accelerate from a'}, {'start': '396.698', 'end': '401.334', 'text': 'complete stop, this helps determine if the solenoid is regulating'}, {'start': '401.334', 'end': '405.970', 'text': 'pressure correctly under dynamic conditions.  Stopping and then accelerating'}, {'start': '405.970', 'end': '410.606', 'text': 'fully helps simulate various load conditions on'}, {'start': '410.606', 'end': '415.241', 'text': 'the transmission, critical for evaluating performance.  Monitoring the'}, {'start': '415.241', 'end': '419.877', 'text': "vehicle's response during this phase can reveal whether the"}, {'start': '419.877', 'end': '424.513', 'text': 'P0746 condition persists or if the problem appears to be intermittent.  The'}, {'start': '424.513', 'end': '429.148', 'text': 'data captured during this test will help uncover essential information'}, {'start': '429.148', 'end': '433.784', 'text': "about the solenoid's functionality."}, {'start': '433.784', 'end': '438.298', 'text': 'The next step involves checking for Pending or'}, {'start': '438.298', 'end': '442.812', 'text': 'Confirmed DTCs using the HDS tool.  After completing the'}, {'start': '442.812', 'end': '447.326', 'text': 'road test, connect the scanner to monitor the'}, {'start': '447.326', 'end': '451.840', 'text': "vehicle's diagnostic status.  The HDS will provide crucial feedback on whether the"}, {'start': '451.840', 'end': '456.354', 'text': 'P0746 code has reappeared or if other codes'}, {'start': '456.354', 'end': '460.868', 'text': 'may be present.  This step is vital, as it determines'}, {'start': '460.868', 'end': '465.382', 'text': 'whether the problem has been resolved or if'}, {'start': '465.382', 'end': '469.896', 'text': 'further investigation into the CVT system is required.  Evaluating the'}, {'start': '469.896', 'end': '474.410', 'text': 'DTC status will clarify whether your previous efforts were effective or if'}, {'start': '474.410', 'end': '478.924', 'text': 'the vehicle requires further troubleshooting.  Ensuring'}, {'start': '478.924', 'end': '483.438', 'text': 'this check is thorough and accurate can prevent unnecessary repairs'}, {'start': '483.438', 'end': '487.952', 'text': 'or part replacements.'}, {'start': '487.952', 'end': '492.402', 'text': 'When checking the diagnostic menu, if the HDS indicates that'}, {'start': '492.402', 'end': '496.852', 'text': 'DTC P0746 persists, the next immediate action is to replace'}, {'start': '496.852', 'end': '501.302', 'text': 'the crankshaft pulley pressure control solenoid valve'}, {'start': '501.302', 'end': '505.752', 'text': '.  Replacing this component is likely necessary if the DTC'}, {'start': '505.752', 'end': '510.202', 'text': 'confirms it is malfunctioning, and is crucial to restoring'}, {'start': '510.202', 'end': '514.652', 'text': 'normal CVT operation.  On the other hand, if the DTC does'}, {'start': '514.652', 'end': '519.102', 'text': 'not reappear after erasing and testing, it may suggest an'}, {'start': '519.102', 'end': '523.552', 'text': 'intermittent fault, indicating that the system is currently fine.  Understanding'}, {'start': '523.552', 'end': '528.002', 'text': 'these results is crucial to determining the next steps in'}, {'start': '528.002', 'end': '532.452', 'text': 'the repair process.  The technician must document all'}, {'start': '532.452', 'end': '536.902', 'text': 'findings and make recommendations based on the diagnostic status and'}, {'start': '536.902', 'end': '541.352', 'text': 'performance of the vehicle during the road test.'}, {'start': '541.352', 'end': '545.626', 'text': 'The repair verification phase begins by turning the'}, {'start': '545.626', 'end': '549.899', 'text': 'ignition switch back to the ON (II) position to'}, {'start': '549.899', 'end': '554.173', 'text': 'ensure readiness for further testing.  Similar to the'}, {'start': '554.173', 'end': '558.446', 'text': 'initial process, you will again clear the DTC using the HDS, resetting'}, {'start': '558.446', 'end': '562.720', 'text': 'the system to evaluate performance without persistent codes.  Starting'}, {'start': '562.720', 'end': '566.994', 'text': 'the engine after clearing the codes confirms that all'}, {'start': '566.994', 'end': '571.267', 'text': 'systems are operating correctly.  It is then essential to repeat'}, {'start': '571.267', 'end': '575.541', 'text': 'the driving test once more, using the same'}, {'start': '575.541', 'end': '579.814', 'text': "protocol of driving in 'D' and reaching speeds of 37"}, {'start': '579.814', 'end': '584.088', 'text': 'mph (60 km/h) and then assessing full throttle acceleration.'}, {'start': '584.088', 'end': '588.362', 'text': 'This test is critical to verify that the problems have'}, {'start': '588.362', 'end': '592.635', 'text': 'been resolved and that the new solenoid is functioning as'}, {'start': '592.635', 'end': '596.909', 'text': 'expected.  Careful monitoring of vehicle performance during'}, {'start': '596.909', 'end': '601.182', 'text': 'this phase is necessary to ensure that no new'}, {'start': '601.182', 'end': '605.456', 'text': 'or recurring DTCs appear.'}, {'start': '605.456', 'end': '610.249', 'text': 'To prevent future occurrences of DTC P0746, consider implementing a'}, {'start': '610.249', 'end': '615.042', 'text': 'proactive maintenance program.  Regular transmission fluid checks'}, {'start': '615.042', 'end': '619.835', 'text': 'are essential, as maintaining'}, {'start': '619.835', 'end': '624.629', 'text': 'proper fluid levels and quality ensures optimal CVT system performance'}, {'start': '624.629', 'end': '629.422', 'text': '.  Additionally, inspecting the solenoid wiring for'}, {'start': '629.422', 'end': '634.215', 'text': 'signs of wear, corrosion, or damage can help prevent'}, {'start': '634.215', 'end': '639.008', 'text': 'electrical problems that can lead to solenoid failure.'}, {'start': '639.008', 'end': '643.801', 'text': "Scheduling routine transmission services according to the manufacturer's recommendations"}, {'start': '643.801', 'end': '648.594', 'text': 'can also provide an opportunity to detect problems early.  This'}, {'start': '648.594', 'end': '653.387', 'text': 'approach not only extends the life of'}, {'start': '653.387', 'end': '658.181', 'text': 'key drivetrain components, but also contributes to'}, {'start': '658.181', 'end': '662.974', 'text': 'overall vehicle reliability.  Stay informed about Honda maintenance alerts'}, {'start': '662.974', 'end': '667.767', 'text': 'and recall notices to keep your'}, {'start': '667.767', 'end': '672.560', 'text': "vehicle's CVT running smoothly."}, {'start': '672.560', 'end': '677.274', 'text': 'When completing the diagnostic process for DTC P0746, it'}, {'start': '677.274', 'end': '681.989', 'text': 'is essential to understand the implications of this fault code'}, {'start': '681.989', 'end': '686.703', 'text': 'related to the'}, {'start': '686.703', 'end': '691.417', 'text': 'continuously variable transmission pulley pressure control solenoid valve.  Following'}, {'start': '691.417', 'end': '696.131', 'text': 'established troubleshooting steps provides a structured approach to accurately identifying and resolving'}, {'start': '696.131', 'end': '700.846', 'text': 'problems.  The symptoms exhibited, along with the'}, {'start': '700.846', 'end': '705.560', 'text': 'necessary replacement or repairs, ultimately lead to restoring the'}, {'start': '705.560', 'end': '710.274', 'text': 'performance of the Honda Accord transmission.  Additionally, engaging in'}, {'start': '710.274', 'end': '714.989', 'text': 'regular maintenance practices is crucial to preventing future problems.'}, {'start': '714.989', 'end': '719.703', 'text': 'Keeping an eye on transmission fluid levels,'}, {'start': '719.703', 'end': '724.417', 'text': 'inspecting wiring, and adhering to scheduled services can'}, {'start': '724.417', 'end': '729.131', 'text': 'greatly improve vehicle longevity and reliability.  By understanding'}, {'start': '729.131', 'end': '733.846', 'text': 'these elements, Honda Accord owners can better navigate'}, {'start': '733.846', 'end': '738.560', 'text': 'potential transmission challenges.'}]