Código de avería P0079: This code is a generic OBD-II powertrain code, that means it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the model. On vehicles equipped with variable valve timing (VVT), the Engine Control Module / Powertrain Control Module (ECM/PCM) controls the camshaft position by regulating the engine oil through the control solenoid to change the position of the camshaft. The control solenoid is commanded using a Pulse Width Modulated signal (PWM) from the ECM/PCM. The ECM/PCM monitors this signal and if the voltage is below specification, it will set this trouble code and illuminate the Malfunction Indicator Lamp (MIL). Bank 1 refers to the side of the engine with cylinder #1 – be sure to verify according to manufacturers specifications. The exhaust valve control solenoid is usually located on the Exhaust manifold side of the cylinder head. This code is similar to codes P0078 and P0080. This code may also be accompanied by P0027.
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Código de avería P007A: This diagnostic trouble code (DTC) is a generic powertrain code, which means it applies to OBD-II equipped vehicles that have a charge air cooler temperature sensor (Chevy, Ford, Toyota, Mitsubishi, Audi, VW, etc.). Although generic, the exact repair steps may vary depending on make/model. A turbocharger is basically an air pump used to force air into the engine. Inside, there are two sections: the turbine and the compressor. The turbine is attached to the exhaust manifold, where it is driven by exhaust gases. The compressor attaches to the air intake. Both are connected by a shaft, so when the turbine spins, the compressor also spins, allowing intake air to be drawn into the engine. Cooler air provides denser intake charge to the engine and therefore more power. Because of this, many engines are equipped with a charge air cooler, also known as an intercooler. Charge air coolers can be either air-to-liquid or air-to-air coolers, but the function is the same – to cool air entering the intake. A charge air cooler temperature sensor (CACT), is used to measure the temperature and therefore the density, of air entering exiting the charge air cooler. This information is sent to the powertrain control module (PCM) where it is compared to intake air temperature (and in some cases engine coolant temperature and exhaust gas recirculation temperature) to determine charge air cooler performance. The PCM sends a reference voltage (usually 5 volts) through an internal resistor. It then measures the voltage to determine charge air cooler temperature. Note: Sometimes the CACT is part of the boost pressure sensor. Code P007A is set when the PCM detects a malfunction in the bank 1 charge air cooler temperature sensor circuit. On multiple bank engines, bank 1 refers to the bank of cylinders that has the #1 cylinder.
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Código de avería P007B: This diagnostic trouble code (DTC) is a generic powertrain code, which means it applies to OBD-II equipped vehicles that have a charge air cooler temperature sensor (Chevy, Ford, Toyota, Mitsubishi, Audi, VW, etc.). Although generic, the exact repair steps may vary depending on make/model. A turbocharger is basically an air pump used to force air into the engine. Inside, there are two sections: the turbine and the compressor. The turbine is attached to the exhaust manifold, where it is driven by exhaust gases. The compressor attaches to the air intake. Both are connected by a shaft, so when the turbine spins, the compressor also spins, allowing intake air to be drawn into the engine. Cooler air provides denser intake charge to the engine and therefore more power. Because of this, many engines are equipped with a charge air cooler, also known as an intercooler. Charge air coolers can be either air-to-liquid or air-to-air coolers, but the function is the same – to cool air entering the intake. A charge air cooler temperature sensor (CACT), is used to measure the temperature and therefore the density, of air entering exiting the charge air cooler. This information is sent to the powertrain control module (PCM) where it is compared to intake air temperature (and in some cases engine coolant temperature and exhaust gas recirculation temperature) to determine charge air cooler performance. The PCM sends a reference voltage (usually 5 volts) through an internal resistor. It then measures the voltage to determine charge air cooler temperature. Note: Sometimes the CACT is part of the boost pressure sensor. Code P007B is set when the PCM detects a malfunction with the bank 1 charge air cooler temperature sensor. On multiple bank engines, bank 1 refers to the bank of cylinders that has the #1 cylinder.
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Código de avería P007C: This diagnostic trouble code (DTC) is a generic powertrain code, which means it applies to OBD-II equipped vehicles that have a charge air cooler temperature sensor (Chevy, Ford, Toyota, Mitsubishi, Audi, VW, etc.). Although generic, the exact repair steps may vary depending on make/model. A turbocharger is basically an air pump used to force air into the engine. Inside, there are two sections: the turbine and the compressor. The turbine is attached to the exhaust manifold, where it is driven by exhaust gases. The compressor attaches to the air intake. Both are connected by a shaft, so when the turbine spins, the compressor also spins, allowing intake air to be drawn into the engine. Cooler air provides denser intake charge to the engine and therefore more power. Because of this, many engines are equipped with a charge air cooler, also known as an intercooler. Charge air coolers can be either air-to-liquid or air-to-air coolers, but the function is the same – to cool air entering the intake. A charge air cooler temperature sensor (CACT), is used to measure the temperature and therefore the density, of air entering exiting the charge air cooler. This information is sent to the powertrain control module (PCM) where it is compared to intake air temperature (and in some cases engine coolant temperature and exhaust gas recirculation temperature) to determine charge air cooler performance. The PCM sends a reference voltage (usually 5 volts) through an internal resistor. It then measures the voltage to determine charge air cooler temperature. Note: Sometimes the CACT is part of the boost pressure sensor. Code P007C is set when the PCM detects a low charge air cooler temperature sensor signal on bank 1. This usually indicates the circuit is shorted. On multiple bank engines, bank 1 refers to the bank of cylinders that has the #1 cylinder.
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Código de avería P0087: This generic powertrain/engine diagnostic trouble code typically applies to all OBDII equipped vehicles. Some vehicles are equipped with a returnless fuel supply, this means that the fuel pump is pulse width modulated and can vary in pump speed to deliver fuel to the rail at a variable rate instead of constantly running the fuel pump and regulating the pressure with a pressure regulator, returning fuel back to the tank. There is a sensor on the fuel rail that monitors fuel pressure at the rail to determine fuel pressure and vary the pump speed accordingly. The PCM (powertrain control module) or ECM (engine control module) has detected that fuel pressure is below specification for the supply commanded to the fuel pump driver module or fuel pump assembly.
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Código de avería P0088: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to all 1996-newer vehicles (Audi, Dodge, Isuzu, Toyota, VW, Jeep, Chevrolet, etc.). Although generic, the specific repair steps may vary depending on make/model. Some vehicles are equipped with a returnless fuel supply, this means that the fuel pump is pulse width modulated and can vary in pump speed to deliver fuel to the rail at a varible rate instead of constantly running the fuel pump and regulating the pressure with a pressure regulator, returning fuel back to the tank. When a code P0088 is presented, it means that the powertrain control module (PCM) has detected a fuel rail pressure or fuel pressure sensor voltage input that exceeds maximum specifications. The fuel rail pressure sensor is typically of the three-wire, piezoelectric variety. Usually a 5-volt reference voltage signal and a ground signal are supplied to the sensor. As fuel pressure (at the sensor) increases, sensor resistance decreases. If five is maximum voltage to the sensor, and fuel pressure is at its lowest, sensor output should be approximately .5-volts, because sensor resistance is at its highest. As fuel pressure increases and sensor resistance decreases, the sensor signal voltage to the PCM should increase accordingly up to a maximum of 4.5-volts. These voltage figures are generic and you should consult the manufacturer’s service manual for your vehicle prior to testing. There is another fuel rail pressure sensor design that incorporates intake vacuum. Instead of monitoring fuel rail pressure directly, the sensor monitors the degree of intake manifold vacuum and sensor resistance is varied accordingly. The PCM receives the input voltage signal in much the same way as the straight fuel pressure sensor. In yet another type of fuel rail pressure sensor, the fuel pressure regulator is integrated. The pressure sensor has no bearing on the regulation of fuel pressure to the fuel rail but the regulator may (or may not) be electronically regulated. Even if the fuel pressure regulator and sensor are integrated, the regulator may also be vacuum actuated. Fuel rail pressure sensor voltage is received by the PCM, which adjusts fuel pump voltage to accomplish the desired amount of fuel rail pressure. This promotes more efficient fuel consumption. If fuel rail pressure is higher than the amount programmed into the PCM, a P0088 will be stored and a service engine soon lamp may be illuminated.
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Código de avería P0089: The fuel pressure regulator is responsible for maintaining a steady fuel pressure. Some vehicles have a fuel pressure built into the fuel rail assembly. Other vehicles with a returnless fuel supply, the regulator is a part of the fuel pump module inside of the tank. Returnless fuel systems are computer controlled and the fuel pump output and actual fuel rail pressure is determined by a fuel pressure sensor on the rail that uses the temperature of the fuel to determine the actual pressure. The Powertrain control module or Engine control module (PCM/ECM) has determined that the fuel pressure commanded is not within specifications and will set the DTC P0089. Note: On vehicles equipped with returnless fuel systems with only a supply line – where the fuel does not return back to the tank, the fuel pressure commanded and actual values may need to be checked using an advanced scan tool capable of monitoring these values. If there are any other codes such as Lean o2 sensors present along with the P0089, the P0089 code should be solved first before proceeding with other codes. Related fuel pressure regulator engine codes: P0090 Fuel Pressure Regulator 1 Control Circuit P0091 Fuel Pressure Regulator 1 Control Circuit Low P0092 Fuel Pressure Regulator 1 Control Circuit High
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Código de avería P008A: This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II vehicles. That may include but is not limited to vehicles from Hyundai, Ford, Mazda, Dodge, etc. Low fuel pressure systems are generally used in diesel systems. The fact that the injection pump does the heavy labour as far as providing diesel engines with the high fuel pressures they need in order to atomize the fuel adequately. That said, the injection pump still needs to be provided with the fuel in the first place. This is where low fuel pressure pumps/systems come into play. It is extremely important for the ECM (Engine Control Module) to monitor these conditions closely. Reason being, any introduced air caused by a starved injection pump/injector under load can and will cause major issues. Forced limited power is usually a sort of mode that the vehicle enters when it needs to control certain values to prevent the operator from further damaging the engine. Fuel, also has to go through numerous filters, pumps, injectors, lines, connections etc. to finally be delivered to the engine, so as you can imagine, there are a lot of possibilities here. Even small fuel leaks usually provide you with a smell strong enough to notice so keep that in mind. All while monitoring numerous other systems and sensors, the ECM has detected a low fuel pressure condition and/or insufficient flow. Be aware of local fuel conditions. Repetitive fill- ups with dirty fuel can contaminate not only the fuel tank but also the fuel pump and everything else involved to be honest. P008A Low Pressure Fuel System Pressure – Too Low code is set when the ECM has detected low pressure within the low fuel pressure system.
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Código de avería P008B: This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II vehicles. That may include but is not limited to vehicles from Hyundai, Ford, Mazda, Dodge, etc. Low fuel pressure systems are generally used in diesel systems. The fact that the injection pump does the heavy labour as far as providing diesel engines with the high fuel pressures they need in order to atomize the fuel adequately. That said, the injection pump still needs to be provided with the fuel in the first place. This is where low fuel pressure pumps/systems come into play. It is extremely important for the ECM (Engine Control Module) to monitor these conditions closely. Reason being, any introduced air caused by a starved injection pump/injector under load can and will cause major issues. Forced limited power is usually a sort of mode that the vehicle enters when it needs to control certain values to prevent the operator from further damaging the engine. Fuel, also has to go through numerous filters, pumps, injectors, lines, connections etc. to finally be delivered to the engine, so as you can imagine, there are a lot of possibilities here. Even small fuel leaks usually provide you with a smell strong enough to notice so keep that in mind. All while monitoring numerous other systems and sensors, the ECM has detected a low fuel pressure condition and/or insufficient flow. Be aware of local fuel conditions. Repetitive fill- ups with dirty fuel can contaminate not only the fuel tank but also the fuel pump and everything else involved to be honest. P008B Low Pressure Fuel System Pressure – Too High code is set when the ECM has detected high pressure within the low fuel pressure system.
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Código de avería P007D: This diagnostic trouble code (DTC) is a generic powertrain code, which means it applies to OBD-II equipped vehicles that have a charge air cooler temperature sensor (Chevy, Ford, Toyota, Mitsubishi, Audi, VW, etc.). Although generic, the exact repair steps may vary depending on make/model. A turbocharger is basically an air pump used to force air into the engine. Inside, there are two sections: the turbine and the compressor. The turbine is attached to the exhaust manifold, where it is driven by exhaust gases. The compressor attaches to the air intake. Both are connected by a shaft, so when the turbine spins, the compressor also spins, allowing intake air to be drawn into the engine. Cooler air provides denser intake charge to the engine and therefore more power. Because of this, many engines are equipped with a charge air cooler, also known as an intercooler. Charge air coolers can be either air-to-liquid or air-to-air coolers, but the function is the same – to cool air entering the intake. A charge air cooler temperature sensor (CACT), is used to measure the temperature and therefore the density, of air entering exiting the charge air cooler. This information is sent to the powertrain control module (PCM) where it is compared to intake air temperature (and in some cases engine coolant temperature and exhaust gas recirculation temperature) to determine charge air cooler performance. The PCM sends a reference voltage (usually 5 volts) through an internal resistor. It then measures the voltage to determine charge air cooler temperature. Note: Sometimes the CACT is part of the boost pressure sensor. Code P007D is set when the PCM detects a high charge air cooler temperature sensor signal on bank 1. This usually indicates an open circuit. On multiple bank engines, bank 1 refers to the bank of cylinders that has the #1 cylinder.
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