Código de avería P0092: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles (Isuzu, Mazda, Dodge, Chrysler, Ford, GMC, Chevy, Toyota, Honda, etc.). Although generic, the specific repair steps may vary depending on make/model. In my experience with diagnosing a code P0092, it has meant that the powertrain control module (PCM) has detected a high voltage signal from the control circuit of the electronic fuel pressure regulator designated with a 1. Systems which have multiple electronic fuel pressure regulators use a numerical designation. It may refer to a certain engine bank but not always. The PCM typically controls the electronic fuel pressure regulator. Battery voltage and ground signals are used to control a servo motor (in the fuel pressure regulator) which positions a valve so that the desired level of fuel pressure may be achieved for any given situation. In order to adjust fuel pressure regulator voltage, when necessary, the PCM monitors the fuel pressure sensor which is located in the fuel injector rail. When voltage is increased at the electronic fuel pressure regulator servo motor, a valve is opened and fuel pressure is increased. Decreased voltage at the servo causes the valve to close and fuel pressure decreases. The fuel pressure regulator and fuel pressure sensor are most frequently integrated into a single housing (with one electrical connector) but may be separate components. If actual fuel pressure regulator control circuit voltage is less than an expected degree, as computed by the PCM, a P0092 will be stored and a malfunction indicator lamp (MIL) may be illuminated. Related fuel pressure regulator engine codes: P0089 Fuel Pressure Regulator 1 Performance P0090 Fuel Pressure Regulator 1 Control Circuit P0091 Fuel Pressure Regulator 1 Control Circuit Low
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Código de avería P0093: This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model. When the computer sets this code it senses a large fuel leak in the high pressure section of the engine. The ECM in a diesel always monitors and controls the fuel pressure from the fuel injector pump to the injectors as long as the engine is running. To set a code P0093 the ECM must sense a sudden large drop in fuel pressure within the system. This drop in fuel pressure can be internal, external or caused by a faulty sensor signal to the ECM. When this happens, the ECM sets the code, goes into fail-safe mode which will suspend the fuel injector pump operation and allow one minute to pull over before it shuts the engine down. It will remain in fail-safe mode until the key is off. The engine may run again but investigate the problem first. This problem will not correct itself or go away. The engine could shut down at any time or speed. Unlike gasoline engines with fuel injection pressures of 30 to 50 PSI, diesel engine fuel pressure runs up in the Megapascal range, from 4,500 to 30,000 PSI. It takes very high fuel pressure to force fuel into the high compression cylinder of a diesel. As you progress in diagnosing the problem be always mindful of the fuel pressure when the engine is running. It is ridiculously high! You have a code P0093 stating there is a large fuel leak in the system. Use caution when sticking your nose under the hood of a running engine with this code, or wrenching on the fuel system.
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Código de avería P0094: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to all 1996-newer vehicles (Ford, GMC, Chevrolet, VW, Dodge, etc.). Although generic, the specific repair steps may vary depending on make/model. When I come across a stored code P0094, it generally means that the powertrain control module (PCM) has detected a substantial decrease in fuel pressure. Fuel pressure specifications vary from one manufacturer to another and the PCM is programmed to monitor fuel pressure according to these specifications. This code is primarily used in diesel powered vehicles. Diesel fuel systems are monitored (by the PCM) using one or more fuel pressure sensors. Low pressure fuel is pumped from the storage tank to the high pressure injector pump via a supply (or transfer) pump that is usually either attached to the frame rail or inside the fuel tank. Once the fuel exits the injector pump, it can reach levels as high as 2,500 psi. Use caution when testing fuel pressure. These extreme fuel pressure conditions can be very hazardous. Although diesel fuel is not as combustible as gasoline, it is highly flammable especially under high pressure. Additionally, diesel fuel under these levels of pressure can penetrate the skin and enter the bloodstream. This can be harmful or even fatal under certain circumstances. Fuel pressure sensors are placed at strategic locations in the fuel delivery system. Typically, there will be at least one fuel pressure sensor for each segment of the fuel system; a sensor for the low pressure supply end and another for the high pressure delivery end. The fuel pressure sensors are normally of a three-wire design. Some manufacturers use battery voltage and others use a lesser degree of voltage (usually five-volts) as a reference for the PCM. Reference voltage and a ground signal are supplied to the sensor. The sensor provides the PCM with a voltage input signal. As fuel system pressure increases, the resistance level of the fuel pressure sensor decreases, allowing the voltage signal that is input to the PCM to increase accordingly. When fuel pressure decreases, resistance levels in the fuel pressure sensor increase, causing the voltage input signal to the PCM to decrease. If the fuel pressure sensor/s is operating normally, this cycle takes effect with each ignition cycle. If the PCM detects fuel system pressure that does not coincide with programmed specifications, during a set period of time and under certain circumstances, a code P0094 will be stored and a malfunction indicator lamp may be illuminated.
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Código de avería P0091: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles (Isuzu, Mazda, Dodge, Chrysler, Ford, GMC, Chevy, Toyota, Honda, etc.). Although generic, the specific repair steps may vary depending on make/model. When a code P0091 is stored, it means that the powertrain control module (PCM) has detected a low voltage signal from the control circuit of the electronic fuel pressure regulator designated 1. The numeral designation 1 is used in systems which have multiple electronic fuel pressure regulators. It may refer to a particular engine bank but not always. Typically, the electronic fuel pressure regulator is controlled by the PCM. Battery voltage and ground signals are used to control a servo motor which positions the regulator valve so that the desired level of fuel pressure is achieved for any given situation. The fuel pressure sensor is located in the fuel injector rail and allows the PCM to monitor fuel pressure so that it can adjust fuel pressure regulator voltage as necessary. As voltage is increased at the electronic fuel pressure regulator servo motor, the valve is opened and fuel pressure is increased. Decreased voltage at the servo causes it to retract and fuel pressure decreases. Most often, the fuel pressure regulator and fuel pressure sensor are integrated into a single housing (with one electrical connector) but may be separate components. If actual fuel pressure regulator control circuit voltage is less than a desired level, as calculated by the PCM, a P0091 will be stored and a malfunction indicator lamp (MIL) may be illuminated. Related fuel pressure regulator engine codes: P0089 Fuel Pressure Regulator 1 Performance P0090 Fuel Pressure Regulator 1 Control Circuit P0092 Fuel Pressure Regulator 1 Control Circuit High
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Código de avería P0090: This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles (GMC, Chevy, Chrsyler, Dodge, Jeep, Mitsubishi, VW, Toyota, etc.). Although generic, the specific repair steps may vary depending on make/model. A stored code P0090 means that the powertrain control module (PCM) has detected an open control circuit in the electronic fuel pressure regulator (designated 1). This designation is used in systems that incorporate multiple electronic fuel pressure regulators. This type of designation may refer to the engine bank but not exclusively. Also, the word open could be substituted for disconnected or broken. The electronic fuel pressure regulator is typically controlled by the PCM. A battery voltage signal and a ground signal are used to control a servo motor which positions a valve so that the desired level of fuel pressure can be achieved for any given set of circumstance. As voltage is applied to the electronic fuel pressure regulator servo motor, the valve is opened in small increments and fuel pressure is increased. When voltage is decreased, the servo retracts and a strong spring forces the valve to close; fuel pressure is decreased. The fuel pressure sensor (usually located in the fuel injector rail) allows the PCM to monitor fuel pressure and adjust fuel pressure regulator voltage accordingly. The fuel pressure regulator and fuel pressure sensor may be separate components but are most often integrated into a single housing which has one electrical connector. If actual fuel pressure fails to comply with desired fuel pressure, as calculated by the PCM, a P0090 may be stored and a malfunction indicator lamp (MIL) illuminated. Related fuel pressure regulator engine codes: P0089 Fuel Pressure Regulator 1 Performance P0091 Fuel Pressure Regulator 1 Control Circuit Low P0092 Fuel Pressure Regulator 1 Control Circuit High
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Código de avería P009F: This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II vehicles. That may include but is not limited to vehicles from Dodge, Ram, Chevy, Ford, GMC, Saturn, etc. Although generic, the specific repair steps may vary depending on make/model. The P009F OBD-II trouble code is one of five possible codes that indicates that the Powertrain Control Module (PCM) has detected a malfunction and with the operation of the Fuel Pressure Relief Control Circuit. The codes that are associated with Fuel Pressure Relief malfunctions are P009B, P009C, P009D, P009E, and P009F. The purpose of the Fuel Pressure Relief Control Circuit is to control the amount and pressure of the fuel delivered to the engine to operate properly. The PCM monitors the fuel pressure regulator and opens the fuel pressure relief valve to return excess fuel back to the fuel supply system. Code P009F is set by the PCM when the Fuel Pressure Relief Control Circuit stuck in the on position.
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Código de avería P009D: This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II vehicles. That may include but is not limited to vehicles from Dodge, Ram, Chevy, Ford, GMC, Saturn, etc. Although generic, the specific repair steps may vary depending on make/model. The P009D OBD-II trouble code is one of five possible codes that indicates that the Powertrain Control Module (PCM) has detected a malfunction and with the operation of the Fuel Pressure Relief Control Circuit. The codes that are associated with Fuel Pressure Relief malfunctions are P009B, P009C, P009D, P009E, and P009F. The purpose of the Fuel Pressure Relief Control Circuit is to control the amount and pressure of the fuel delivered to the engine to operate properly. The PCM monitors the fuel pressure regulator and opens the fuel pressure relief valve to return excess fuel back to the fuel supply system. Code P009D is set by the PCM when the Fuel Pressure Relief Control Circuit has a high voltage condition.
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Código de avería P009E: This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II vehicles. That may include but is not limited to vehicles from Dodge, Ram, Chevy, Ford, GMC, Saturn, etc. Although generic, the specific repair steps may vary depending on make/model. The P009E OBD-II trouble code is one of five possible codes that indicates that the Powertrain Control Module (PCM) has detected a malfunction and with the operation of the Fuel Pressure Relief Control Circuit. The codes that are associated with Fuel Pressure Relief malfunctions are P009B, P009C, P009D, P009E, and P009F. The purpose of the Fuel Pressure Relief Control Circuit is to control the amount and pressure of the fuel delivered to the engine to operate properly. The PCM monitors the fuel pressure regulator and opens the fuel pressure relief valve to return excess fuel back to the fuel supply system. Code P009E is set by the PCM when the Fuel Pressure Relief Control Circuit stuck in the off position or has a performance condition.
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Código de avería P009A: This generic powertrain diagnostic trouble code (DTC) typically applies to many OBD-II vehicles. That may include but is not limited to vehicles from Mercedes-Benz, Jeep, Mazda, Ford, etc. If you have a service engine soon lamp accompanied by a code P009A, it means that the powertrain control module (PCM) has detected a discrepancy in the correlating signals between the intake air temperature (IAT) sensor and the ambient air temperature sensor. IAT and ambient air temperature must be monitored in comparison to ensure that no obstructions impede vital air flow to the engine intake. IAT sensors are normally composed of a thermal resistor that protrudes from a plastic housing on a two-wire pedestal. The sensor is inserted into the air intake pipe or air filter housing. A secondary IAT sensor design integrates the sensor inside the mass air flow (MAF) sensor housing. Sometimes the IAT thermal resistor is positioned parallel with the MAF hot wire and other times it is located in a recessed area away from air flow. Check IAT sensor location specifications for the vehicle in question before making any assumptions. The thermal resistor is usually positioned so that intake air may flow across it. The sensor housing is typically designed to be stuffed into its mounting point through a thick rubber grommet. As intake air temperature increases, the level of resistance in the IAT resistor decreases; causing circuit voltage to move towards the reference maximum. When air is cooler, IAT sensor resistance increases. That results in decreased IAT sensor circuit voltage. The PCM sees these variations in IAT sensor signal voltage as changes in intake air temperature. The ambient air temperature sensor acts in much the same manner as the IAT sensor. The ambient air temperature sensor is normally positioned near the grill area. A code P009A will be stored and a malfunction indicator lamp (MIL) may be illuminated if the PCM detects voltage signals from the IAT sensor and the ambient air temperature sensor which differ by more than the maximum allowable amount for a certain period of time. On some vehicle applications, MIL illumination may require multiple ignition cycles with a failure. An example of a MAF sensor:
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Código de avería P009B: This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II vehicles. That may include but is not limited to vehicles from Dodge, Ram, Chevy, Ford, GMC, Saturn, etc. Although generic, the specific repair steps may vary depending on make/model. The P009B OBD-II trouble code is one of five possible codes that indicates that the Powertrain Control Module (PCM) has detected a malfunction and with the operation of the Fuel Pressure Relief Control Circuit. The codes that are associated with Fuel Pressure Relief malfunctions are P009B, P009C, P009D, P009E, and P009F. The purpose of the Fuel Pressure Relief Control Circuit is to control the amount and pressure of the fuel delivered to the engine to operate properly. The PCM monitors the fuel pressure regulator and opens the fuel pressure relief valve to return excess fuel back to the fuel supply system. Code P009B is set by the PCM when the Fuel Pressure Relief Control Circuit is open.
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