DTC P0128: Malfunción del Sistema de Refrigeración - Honda Accord 2012-2017
DIY Honda Garage Español
[{'start': '5.000', 'end': '9.863', 'text': 'The topic of this presentation is Diagnostic Trouble Code'}, {'start': '9.863', 'end': '14.726', 'text': '(DTC) P0128, which indicates a cooling system malfunction'}, {'start': '14.726', 'end': '19.588', 'text': 'specifically targeted at models like the'}, {'start': '19.588', 'end': '24.451', 'text': '2012 to 2017 Honda Accord. This error code is triggered'}, {'start': '24.451', 'end': '29.314', 'text': 'when there is a problem with the functioning of the thermostat.  The'}, {'start': '29.314', 'end': '34.177', 'text': 'thermostat plays a crucial role in regulating the flow'}, {'start': '34.177', 'end': '39.039', 'text': 'of engine coolant based on temperature, and a'}, {'start': '39.039', 'end': '43.902', 'text': 'malfunction can result in improper engine warm-up,'}, {'start': '43.902', 'end': '48.765', 'text': 'which can affect performance and emissions.  Understanding this'}, {'start': '48.765', 'end': '53.628', 'text': 'DTC requires a deeper understanding of how engine coolant temperature'}, {'start': '53.628', 'end': '58.490', 'text': 'affects overall engine function.  The following'}, {'start': '58.490', 'end': '63.353', 'text': 'slides will detail error descriptions, possible causes, symptoms, and'}, {'start': '63.353', 'end': '68.216', 'text': 'offer troubleshooting steps for effective remediation.'}, {'start': '68.216', 'end': '72.650', 'text': 'DTC P0128 typically means a fault in the'}, {'start': '72.650', 'end': '77.085', 'text': 'cooling system, specifically linked to the thermostat.  The role of the thermostat'}, {'start': '77.085', 'end': '81.519', 'text': 'is to regulate the temperature of the engine coolant by opening'}, {'start': '81.519', 'end': '85.954', 'text': 'and closing at designated temperatures.  As for location,'}, {'start': '85.954', 'end': '90.388', 'text': 'the thermostat is usually located near the engine block,'}, {'start': '90.388', 'end': '94.823', 'text': 'allowing it to effectively measure the temperature of the'}, {'start': '94.823', 'end': '99.257', 'text': 'engine coolant.  The Powertrain Control Module'}, {'start': '99.257', 'end': '103.692', 'text': '(PCM) is responsible for monitoring coolant temperature by reading'}, {'start': '103.692', 'end': '108.126', 'text': 'sensors located in both the engine block and'}, {'start': '108.126', 'end': '112.561', 'text': 'the radiator.  If the coolant temperature does not rise as'}, {'start': '112.561', 'end': '116.995', 'text': 'anticipated, the PCM interprets this as the thermostat'}, {'start': '116.995', 'end': '121.430', 'text': 'being stuck open.  Therefore, understanding the'}, {'start': '121.430', 'end': '125.864', 'text': 'components involved is critical to accurately diagnosing the malfunction.'}, {'start': '125.864', 'end': '130.642', 'text': 'Several problems can contribute to the occurrence of DTC P'}, {'start': '130.642', 'end': '135.419', 'text': '0128. The most common culprit is a faulty thermostat that'}, {'start': '135.419', 'end': '140.197', 'text': 'remains open, not properly directing engine coolant'}, {'start': '140.197', 'end': '144.974', 'text': 'for optimal warm-up.  Other potential causes include failures in'}, {'start': '144.974', 'end': '149.752', 'text': 'the engine coolant temperature (ECT) sensor'}, {'start': '149.752', 'end': '154.530', 'text': '1 or the intake air temperature'}, {'start': '154.530', 'end': '159.307', 'text': '(IAT) sensor, where incorrect readings can compromise the function of the'}, {'start': '159.307', 'end': '164.085', 'text': 'thermostat.  Additionally, malfunctions in the manifold absolute pressure'}, {'start': '164.085', 'end': '168.862', 'text': '(MAP) sensor, the crankshaft position (CKP) sensor,'}, {'start': '168.862', 'end': '173.640', 'text': 'or even failures in the fuel delivery system'}, {'start': '173.640', 'end': '178.418', 'text': 'can affect the coolant management process, causing'}, {'start': '178.418', 'end': '183.195', 'text': 'erratic temperature regulation.  Finally, problems with the'}, {'start': '183.195', 'end': '187.973', 'text': 'Exhaust Gas Recirculation (EGR) system or the'}, {'start': '187.973', 'end': '192.750', 'text': 'radiator fan can hinder cooling, requiring'}, {'start': '192.750', 'end': '197.528', 'text': 'the steps described for a thorough diagnosis.'}, {'start': '197.528', 'end': '202.478', 'text': 'Identifying the symptoms associated with DTC P0128 is critical'}, {'start': '202.478', 'end': '207.428', 'text': 'for timely resolution.  Typically, a primary symptom experienced by'}, {'start': '207.428', 'end': '212.378', 'text': 'drivers is delayed engine warm-up, causing'}, {'start': '212.378', 'end': '217.328', 'text': 'the engine to run inefficiently and possibly leading to'}, {'start': '217.328', 'end': '222.278', 'text': 'increased wear.  Due to thermostat failure,'}, {'start': '222.278', 'end': '227.228', 'text': 'exhaust emissions may increase as'}, {'start': '227.228', 'end': '232.178', 'text': 'unoptimized engine heat produces excessive pollutants.'}, {'start': '232.178', 'end': '237.128', 'text': 'Drivers will often notice the check engine light'}, {'start': '237.128', 'end': '242.078', 'text': 'illuminate on the dashboard, signaling the need for immediate attention.'}, {'start': '242.078', 'end': '247.028', 'text': 'Additionally, fluctuations in the temperature gauge may indicate'}, {'start': '247.028', 'end': '251.978', 'text': 'that the vehicle is struggling to maintain an optimal temperature,'}, {'start': '251.978', 'end': '256.928', 'text': 'further emphasizing the severity of this problem.'}, {'start': '256.928', 'end': '261.138', 'text': 'The first troubleshooting step to address DTC P0128'}, {'start': '261.138', 'end': '265.348', 'text': 'involves starting the engine under designated enabled conditions.  This includes'}, {'start': '265.348', 'end': '269.558', 'text': 'verifying that the engine coolant temperature is'}, {'start': '269.558', 'end': '273.768', 'text': 'within the specified range, which plays a crucial role'}, {'start': '273.768', 'end': '277.978', 'text': 'in monitoring thermostat functionality.  It is important to'}, {'start': '277.978', 'end': '282.188', 'text': 'check initial conditions such as engine shutdown time'}, {'start': '282.188', 'end': '286.398', 'text': 'and incoming air temperature.  The details of'}, {'start': '286.398', 'end': '290.608', 'text': 'these conditions directly influence how the PCM evaluates'}, {'start': '290.608', 'end': '294.818', 'text': 'system performance during subsequent trips.  Confirming these factors'}, {'start': '294.818', 'end': '299.028', 'text': 'lays the groundwork for accurately diagnosing and confirming whether'}, {'start': '299.028', 'end': '303.238', 'text': 'the root of the problem is a faulty thermostat or another'}, {'start': '303.238', 'end': '307.448', 'text': 'component.'}, {'start': '307.448', 'end': '312.348', 'text': 'The vehicle must then be driven at a speed'}, {'start': '312.348', 'end': '317.248', 'text': 'between 15 and 75 miles per hour for at least'}, {'start': '317.248', 'end': '322.148', 'text': '30 minutes.  This extended life is essential to allow'}, {'start': '322.148', 'end': '327.048', 'text': 'proper operation and data collection from the engine and'}, {'start': '327.048', 'end': '331.948', 'text': 'associated sensors.  While driving, it is crucial to strictly adhere to'}, {'start': '331.948', 'end': '336.848', 'text': 'traffic regulations and environmental conditions to ensure'}, {'start': '336.848', 'end': '341.748', 'text': 'normal operation.  The PCM monitors real-time data during'}, {'start': '341.748', 'end': '346.648', 'text': 'this drive cycle, playing a significant role in determining'}, {'start': '346.648', 'end': '351.548', 'text': 'whether the problem is persistent or simply a one-time occurrence.'}, {'start': '351.548', 'end': '356.448', 'text': 'Successful completion of this step may indicate the functionality'}, {'start': '356.448', 'end': '361.348', 'text': 'of the thermostat, as any abnormality during this period could'}, {'start': '361.348', 'end': '366.248', 'text': 'lead to setting the DTC.'}, {'start': '366.248', 'end': '371.112', 'text': 'After performing repairs or replacements based on the diagnosis,'}, {'start': '371.112', 'end': '375.976', 'text': 'the Final Repair Verification phase is crucial.  Clearing'}, {'start': '375.976', 'end': '380.840', 'text': 'the DTC using a scan tool resets the'}, {'start': '380.840', 'end': '385.704', 'text': "vehicle's computer, allowing it to perform new diagnostic checks without"}, {'start': '385.704', 'end': '390.568', 'text': 'previous trouble codes clouding the results.  After'}, {'start': '390.568', 'end': '395.432', 'text': 'this, the vehicle should be driven under the same'}, {'start': '395.432', 'end': '400.296', 'text': 'conditions that previously triggered the DTC, ensuring there are no'}, {'start': '400.296', 'end': '405.160', 'text': 'recurring problems.  A proper road test allows the technician to'}, {'start': '405.160', 'end': '410.024', 'text': 'verify that the thermostat or other components have been'}, {'start': '410.024', 'end': '414.888', 'text': 'properly resolved.  Additionally, a successful inspection ensures that the vehicle operates'}, {'start': '414.888', 'end': '419.752', 'text': 'within normal coolant temperature'}, {'start': '419.752', 'end': '424.616', 'text': 'and emissions parameters, promoting reliability.'}, {'start': '424.616', 'end': '429.891', 'text': 'Preventative maintenance plays a critical role in avoiding'}, {'start': '429.891', 'end': '435.166', 'text': 'DTC P0128 in the future.  Regularly checking the'}, {'start': '435.166', 'end': '440.442', 'text': 'engine coolant level ensures that the cooling system'}, {'start': '440.442', 'end': '445.717', 'text': 'remains effective.  Inspecting the condition of the thermostat periodically can detect'}, {'start': '445.717', 'end': '450.992', 'text': 'any early signs of failure before it leads to'}, {'start': '450.992', 'end': '456.267', 'text': 'a more significant problem.  Additionally, monitoring overall'}, {'start': '456.267', 'end': '461.542', 'text': 'engine performance can provide early warnings of system malfunctions, enabling'}, {'start': '461.542', 'end': '466.818', 'text': 'preventative repairs.  Adopting these maintenance habits will not only extend'}, {'start': '466.818', 'end': '472.093', 'text': 'the life of your vehicle, but will also improve its'}, {'start': '472.093', 'end': '477.368', 'text': 'reliability and efficiency.'}, {'start': '477.368', 'end': '482.010', 'text': 'In conclusion, DTC P0128 is a critical diagnostic trouble code'}, {'start': '482.010', 'end': '486.652', 'text': 'that highlights malfunctions in the cooling system, primarily linked to'}, {'start': '486.652', 'end': '491.294', 'text': 'the thermostat.  The importance of'}, {'start': '491.294', 'end': '495.936', 'text': 'timely identification and resolution cannot be underestimated.  Effective troubleshooting steps begin'}, {'start': '495.936', 'end': '500.578', 'text': 'with examining engine conditions and'}, {'start': '500.578', 'end': '505.220', 'text': 'driving patterns to confirm if symptoms align with a'}, {'start': '505.220', 'end': '509.862', 'text': 'faulty thermostat.  Additionally, a systematic approach to testing and'}, {'start': '509.862', 'end': '514.504', 'text': 'preventative maintenance can significantly mitigate future occurrences of'}, {'start': '514.504', 'end': '519.146', 'text': 'this DTC, ensuring your Honda Accord continues to run smoothly'}, {'start': '519.146', 'end': '523.788', 'text': 'and efficiently.  Being proactive not only improves'}, {'start': '523.788', 'end': '528.430', 'text': 'vehicle performance, but also supports its'}, {'start': '528.430', 'end': '533.072', 'text': 'overall longevity.'}]