Código de avería P0037: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles, including but not limited to Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Acura, etc. Specific repair steps may vary depending on the model. Heated Oxygen sensors (HO2S) are inputs used by the PCM (Powertrain Control Module) to determine oxygen content in the exhaust system. Bank 1, sensor 2 refers to the second sensor back on bank 1. The PCM uses the information gained from the Bank 1,2 HO2S mainly to monitor the efficiency of the catalytic converter. Integral to this sensor is a heater element The PCM controls this heater to warm up the sensor to operating temperature. This allows the engine to enter closed loop faster and reduces emissions on cold startup. The PCM continuously monitors the heater circuits for abnormal voltages or in some cases, even amperages. Depending on the make of vehicle, the Oxygen sensor heater is controlled one of two ways. One way is that the PCM directly controls the voltage feed to the heater either directly or via a HO2S relay and a ground is supplied from the vehicle’s common ground. The other way would be a fused 12 volt Battery feed (B+) that feeds 12 volts to the heater element anytime the ignition is on and the control of the heater is done by a driver in the PCM which controls the ground side of the heater circuit. Finding out which one you have is important because the PCM activates the heater under various circumstances. If the PCM detects an abnormally low voltage condition on the heater circuit, P0037 may set.
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Código de avería P0028: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles, including but not limited to Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Acura, etc. Specific repair steps may vary depending on the model. On vehicles equipped with variable valve timing (VVT), camshafts are controlled by hydraulic actuators fed by the engine oil system through control solenoids by the engine control module/powertrain control module (ECM/PCM). The ECM/PCM has detected the range of movement of the intake camshaft on Bank 2 is out of specifications or not operating when commanded. Bank 2 refers to the side of the engine opposite from cylinder #1 – be sure to verify which side is correct according to manufacturers specifications. The intake valve control solenoid is typically located on the intake manifold side of the cylinder head. Note: This code may also be associated with codes P0081, P0082 or P0083 – if any of these codes exist, fix the solenoid problem before proceeding with diagnosing the circuit range/performance issue. This code is similar to codes P0026, P0027, and P0029.
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Código de avería P0038: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles, including but not limited to Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Nissan, etc. Specific repair steps may vary depending on the model. Oxygen sensors with a heating element are common on today’s engines. Heated Oxygen sensors (HO2S) are inputs used by the PCM (Powertrain Control Module) to determine oxygen content in the exhaust system. The PCM uses the information gained from the Bank 1,2 HO2S mainly to monitor the efficiency of the catalytic converter. Integral to this sensor is a heater element. While in pre-OBD II vehicles an Oxygen sensor was a one wire sensor, now they are more commonly 4 wire sensors: Two dedicated to the oxygen sensor and two dedicated to the heater element. The oxygen sensor heater basically decreases the time needed to achieve closed loop. The PCM controls the heater on-time. The PCM also continuously monitors the heater circuits for abnormal voltages or in some cases, even abnormal amperages. Depending on the make of vehicle, the Oxygen sensor heater is controlled one of two ways. (1) The PCM directly controls the voltage feed to the heater either directly or via a HO2S relay and a ground is supplied from the vehicle’s common ground. (2) There is a fused 12 volt Battery feed (B+) that feeds 12 volts to the heater element anytime the ignition is on and the control of the heater is done by a driver in the PCM which controls the ground side of the heater circuit. Finding out which one you have is important because the PCM activates the heater under various circumstances. If the PCM detects an abnormally high voltage condition on the heater circuit, P0038 may set. This code is only referring to the heating circuitry half of the Oxygen sensor.
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Código de avería P0029: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles, including but not limited to Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Acura, etc. Specific repair steps may vary depending on the model. On vehicles equipped with variable valve timing (VVT), camshafts are controlled by hydraulic actuators fed by the engine oil system through control solenoids by the engine control module/powertrain control module (ECM/PCM). The ECM/PCM has detected the range of movement of the exhaust camshaft on bank 1 is out of specifications or not operating when commanded. Bank 2 refers to the side of the engine opposite from cylinder #1 – be sure to verify which side is correct according to manufacturers specifications. The exhaust valve control solenoid is typically located on the exhaust manifold side of the cylinder head. Note: This code may also be associated with codes P0078, P0079 or P0080 – if any of these codes exist, fix the solenoid problem before proceeding with diagnosing the circuit range/performance issue. This code is similar to codes P0026, P0029, and P0028.
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Código de avería P0039: This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the make and model. Owners of these these brands may include but are not limited to VW, Dodge, Saab, Pontiac, Ford, GM, etc. A code P0039 Turbo/Super Charger Bypass Valve Control Circuit Range/Performance is stored in turbocharged and supercharged vehicles when the powertrain control module (PCM) has detected a turbocharger or supercharger boost pressure bypass valve control circuit malfunction. A service engine soon lamp may also be illuminated. If this code is exhibited in a vehicle that is not turbocharged or supercharged, suspect a PCM programming error. The boost pressure bypass valve is an electronically controlled valve that is constructed to relieve turbo/supercharger boost pressure before it exceeds the manufacturer’s specified limit (usually between nine and fourteen-pounds). This is necessary in order to relieve potentially harmful (to the engine) boost pressure levels in the event of a turbo/supercharger malfunction. The boost pressure bypass valve is controlled by the powertrain control module (PCM) or a separate boost pressure control module. More often than not, the boost controller is an integrated part of the PCM. The boost controller gathers input signals from various engine sensors and uses them to calculate the optimum degree of turbo/supercharger boost pressure. The boost pressure bypass valve is then activated, using an electronic solenoid, electric motor, or vacuum control valve to achieve the desired amount of boost pressure. If the boost pressure sensor delivers an input signal to the PCM that indicates an inability to successfully control boost pressure, this code will be stored. Additionally, if the PCM detects an input voltage signal that is not within programmed limits, for a specified amount of time and under certain circumstances, a P0039 Turbo/Supercharger Bypass Valve Control Circuit Range/Performance code may be stored. Turbo/supercharger bypass control valve operation is normally accomplished using a solenoid or a small electric motor. Vacuum operated valves are used on some models but this is design is much less common. The PCM supplies a direct voltage signal in order to activate electronically controlled valves but vacuum actuated valves are controlled using a vacuum control (or vacuum service) solenoid. The vacuum service solenoid is usually supplied with constant voltage and the PCM outputs a ground signal when the valve must be opened to relieve boost pressure. The valve closes automatically when the ground signal is stopped by the PCM. The vacuum actuated bypass valve is controlled using a voltage signal from the PCM applied to a vacuum service solenoid. Opening and closing the solenoid permits engine vacuum to the reach the valve (as required) to actuate opening. Consult the manufacturer’s service manual (or equivalent) for turbo/supercharger bypass control system specifications before beginning a diagnosis.
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Código de avería P002A: This is a generic powertrain diagnostic trouble code (DTC) and typically applies to OBD-II vehicles. Vehicles affected may include but is not limited to Volvo, Chevrolet, Ford, Dodge, Porsche, Ford, Land Rover, Audi, Hyundai, Fiat, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration. The camshaft is responsible for the valves’ positions. It uses a shaft with lobes integrated in the design to a specific measurement (depending on engine manufacturer and model) to, when mechanically timed properly, precisely open and close valves at the optimal amount/speed. The crankshaft and camshaft are connected mechanically using different styles (e.g. belt, chain). In the code description, they mention the camshaft "profile". What they are referring to here, is the shape or the roundness of the lobe. Some systems use these adjustable lobes, I am going to call it, to precisely integrate a more efficient "lobe design" at given times. These are beneficial because, at different engine speeds and loads, having a different camshaft profile can increase volumetric efficiency among other benefits depending on operator demands. It is important to note, most times it is not another physical lobe rather, manufacturers mimic a "new lobe" by using varying strategies (i.e. switchable/adjustable rocker arm components). The letter "1" in the description is extremely valuable in this case. Not only could the camshaft be on either side, but there may be 2 shafts on each cylinder head. So it’s important to clarify which camshaft you are working with before proceeding. As far as banks go, bank 1 will be the one with cylinder #1. Most times, B refers to the exhaust camshaft and A refers to the intake camshaft. This all depends on which particular engine you are working with as there are countless different designs that will alter these diagnosis procedures depending which one you own. Refer to she manufacturer’s service manual for the specifics. The ECM (Engine Control Module) illuminates the CEL (Check Engine Light) with P002A and related codes when it detects a malfunction within the camshaft profile control circuit. P002A is set when there is an open within the bank 1 circuit.
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Código de avería P003A: This is a generic powertrain diagnostic trouble code (DTC) and typically applies to OBD-II vehicles. That may include but is not limited to vehicles from Chevy (Chevrolet), GMC (Duramax), Dodge, Ram (Cummins), Isuzu, Ford, Vauxhall, VW, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration. Turbochargers, superchargers, and any other forced induction (FI) systems for that matter, use energy generated from the engine (i.e.: exhaust pulses, belt-driven screw-type, etc.) to increase the amount of air that can be introduced to the combustion chamber (increased volumetric efficiency). Given the fact that, in forced induction systems, intake pressures need to vary and need to be adjusted according to the operator’s many power needs. Manufacturers use a form of boost control valve (AKA, Waste-gate, boost control solenoid, etc.), which is monitored and controlled by the ECM (Engine Control Module), to make sure the air/fuel mixture is stoichiometric (ideal). It does this, by mechanically adjusting the "vanes" in the charger. These vanes are responsible for adjusting the amount of boost (intake pressure) to the chamber. As you can imagine, a problem within the boost controlling component, may cause drivability issues. The problem is, when the ECM loses control of the boost, typically, your vehicle goes into "limp" mode to avoid engine damage (via over/under-boost conditions causing a potentially damaging rich and/or lean A/F mixture). As far as the letter "A" goes here, it could be to distinguish a connector, wire, circuit group, etc. That said, the manufacturer’s specifications is the best resource you could have for this. The ECM illuminates the check engine light (CEL) with P003A and related codes when it detects a fault within the boost control system. The P003A DTC is activated when the ECM (Engine Control Module) detects the position of the "A" boost control arm (connected to the vanes), to be out of desired range(s). A turbocharger and related components:
codigo-p003a
Código de avería P002B: This is a generic powertrain diagnostic trouble code (DTC) and typically applies to OBD-II vehicles. Vehicles affected may include but is not limited to Volvo, Chevrolet, Ford, Dodge, Porsche, Ford, Land Rover, Audi, Hyundai, Fiat, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration. The camshaft is responsible for the valves’ positions. It uses a shaft with lobes integrated in the design to a specific measurement (depending on engine manufacturer and model) to, when mechanically timed properly, precisely open and close valves at the optimal amount/speed. The crankshaft and camshaft are connected mechanically using different styles (e.g. belt, chain). In the code description, they mention the camshaft "profile". What they are referring to here, is the shape or the roundness of the lobe. Some systems use these adjustable lobes, I am going to call it, to precisely integrate a more efficient "lobe design" at given times. These are beneficial because, at different engine speeds and loads, having a different camshaft profile can increase volumetric efficiency among other benefits depending on operator demands. It is important to note, most times it is not another physical lobe rather, manufacturers mimic a "new lobe" by using varying strategies (i.e. switchable/adjustable rocker arm components). The letter "1" in the description is extremely valuable in this case. Not only could the camshaft be on either side, but there may be 2 shafts on each cylinder head. So it’s important to clarify which camshaft you are working with before proceeding. As far as banks go, bank 1 will be the one with cylinder #1. Most times, B refers to the exhaust camshaft and A refers to the intake camshaft. This all depends on which particular engine you are working with as there are countless different designs that will alter these diagnosis procedures depending which one you own. Refer to she manufacturer’s service manual for the specifics. The ECM (Engine Control Module) illuminates the CEL (Check Engine Light) with P002B and related codes when it detects a malfunction within the camshaft profile control circuit. P002B is set when there is an low electrical condition within the bank 1 circuit.
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Código de avería P003B: This is a generic powertrain diagnostic trouble code (DTC) and typically applies to OBD-II vehicles. That may include but is not limited to vehicles from Chevy (Chevrolet), GMC (Duramax), Dodge, Ram (Cummins), Isuzu, Ford, Vauxhall, VW, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration. Turbochargers, superchargers, and any other forced induction (FI) systems for that matter, use energy generated from the engine (i.e.: exhaust pulses, belt-driven screw-type, etc.) to increase the amount of air that can be introduced to the combustion chamber (increased volumetric efficiency). Given the fact that, in forced induction systems, intake pressures need to vary and need to be adjusted according to the operator’s many power needs. Manufacturers use a form of boost control valve (AKA, Waste-gate, boost control solenoid, etc.), which is monitored and controlled by the ECM (Engine Control Module), to make sure the air/fuel mixture is stoichiometric (ideal). It does this, by mechanically adjusting the "vanes" in the charger. These vanes are responsible for adjusting the amount of boost (intake pressure) to the chamber. As you can imagine, a problem within the boost controlling component, may cause drivability issues. The problem is, when the ECM loses control of the boost, typically, your vehicle goes into "limp" mode to avoid engine damage (via over/under-boost conditions causing a potentially damaging rich and/or lean A/F mixture). As far as the letter "B" goes here, it could be to distinguish a connector, wire, circuit group, etc. That said, the manufacturer’s specifications is the best resource you could have for this. The ECM illuminates the check engine light (CEL) with P003B and related codes when it detects a fault within the boost control system. The P003B DTC is activated when the ECM (Engine Control Module) detects the position of the "B" boost control arm (connected to the vanes), to be out of desired range(s). A turbocharger and related components:
codigo-p003b
Código de avería P002C: This is a generic powertrain diagnostic trouble code (DTC) and typically applies to OBD-II vehicles. Vehicles affected may include but is not limited to Volvo, Chevrolet, Ford, Dodge, Porsche, Ford, Land Rover, Audi, Hyundai, Fiat, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration. The camshaft is responsible for the valves’ positions. It uses a shaft with lobes integrated in the design to a specific measurement (depending on engine manufacturer and model) to, when mechanically timed properly, precisely open and close valves at the optimal amount/speed. The crankshaft and camshaft are connected mechanically using different styles (e.g. belt, chain). In the code description, they mention the camshaft "profile". What they are referring to here, is the shape or the roundness of the lobe. Some systems use these adjustable lobes, I am going to call it, to precisely integrate a more efficient "lobe design" at given times. These are beneficial because, at different engine speeds and loads, having a different camshaft profile can increase volumetric efficiency among other benefits depending on operator demands. It is important to note, most times it is not another physical lobe rather, manufacturers mimic a "new lobe" by using varying strategies (i.e. switchable/adjustable rocker arm components). The letter "1" in the description is extremely valuable in this case. Not only could the camshaft be on either side, but there may be 2 shafts on each cylinder head. So it’s important to clarify which camshaft you are working with before proceeding. As far as banks go, bank 1 will be the one with cylinder #1. Most times, B refers to the exhaust camshaft and A refers to the intake camshaft. This all depends on which particular engine you are working with as there are countless different designs that will alter these diagnosis procedures depending which one you own. Refer to she manufacturer’s service manual for the specifics. The ECM (Engine Control Module) illuminates the CEL (Check Engine Light) with P002C and related codes when it detects a malfunction within the camshaft profile control circuit. P002C is set when there is an high electrical condition within the bank 1 circuit.
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