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P0583 – OBD-II Trouble Code Technical Description Cruise Control Vacuum Control Circuit Low What does Trouble Code P0583 mean? OBD-II code P0583 indicates a low signal in the cruise control vacuum control circuit. This code, although not a critical fault, is important for the correct operation of the cruise control on your vehicle. When P0583 occurs, the following points should be considered: Possible Causes Possible causes of a P0583 code in the cruise control system include: The solution to the problem depends on the specific cause, and diagnostics are performed to identify and correct the problem. What are the symptoms of trouble code P0583? Symptoms of a P0583 diagnostic code may include: This P0583 code will disable the vehicle's cruise control function. However, it is often accompanied...

P0577 - OBD-II Trouble Code Technical Description Cruise Control Input Circuit High What does Trouble Code P0577 mean? This P0577 diagnostic code applies to OBD-II vehicles with cruise control. The Engine Control Module (ECM) is responsible for the proper operation of the cruise control system and sets this code if problems occur with the cruise control system. Possible Causes The PCM and cruise control module work together to control vehicle speed. If the PCM detects a problem in this circuit, it runs a self-test on the cruise control system. Code P0577 is stored if the PCM detects abnormal voltage/resistance in the input circuit from the speed control. Most often, P0577 codes are associated with a malfunctioning cruise control switch. This defect may be caused by liquid spillage on the switches. Causes of a P0577 code may include: What are the symptoms...

P0576 – OBD-II Trouble Code Technical Description Cruise Control Input Circuit Low What does Trouble Code P0576 mean? DTC P0576 is a generic code that often applies to vehicles equipped with a cruise control system. Vehicle brands that fall under this code include Chevrolet (Chevy), Toyota, Ford, Harley, Dodge, Ram and others. The Engine Control Module (ECM) plays an important role in keeping the engine running smoothly and also monitors various aspects such as emissions, fuel efficiency, performance and comfort features. Cruise control is a convenient feature for long trips, allowing the driver to not constantly maintain speed. However, if the cruise control system encounters a malfunction, it may disable the function. Typically, when a P0576 code is present, the indicator...

P0574 – OBD-II Trouble Code Technical Description Vehicle speed is too high. What does trouble code P0574 mean? The "P" in the first position of the Diagnostic Trouble Code (DTC) indicates the powertrain system (engine and transmission), the "0" in the second position indicates that it is a generic OBD-II (OBD2) DTC. The last two characters "74" are the DTC number. OBD2 diagnostic trouble code P0574 means that a problem has been detected with the cruise control system. The cruise control system allows the vehicle to maintain a constant speed set by the driver without having to keep your foot on the accelerator pedal. If the PCM detects an anomaly in the operation of this system, such as the cruise control speed limit being exceeded, it stores a P0574 trouble code and activates the Check Engine Light. Code P0574 indicates that the speed...

P0529 – OBD-II Trouble Code Technical Description What does Trouble Code P0529 mean? Code P0529 is a generic OBD-II transmission code that is associated with the vehicle speed control system and idle speed control system. This code indicates a problem with the fan speed sensor signal wire. It can manifest itself differently in different makes and models of cars, but is usually associated with an erroneous or intermittent signal from this sensor. If your vehicle's code P0529 appears, it may indicate a problem with the cooling fan control system and requires diagnosis and repair. Possible Causes A P0529 code can occur for several reasons, including: When a P0529 code appears, diagnostics are required to determine the specific cause and then appropriate...

P0524 – OBD-II Trouble Code Technical Description Engine Oil Pressure Too Low What does Trouble Code P0524 mean? The vehicle's main computer, the PCM, controls many systems and components in the vehicle. One such component is the oil pressure sensor, which measures the mechanical oil pressure in the engine and transmits it as voltage to the PCM. Some vehicles display this value on the dashboard, while others simply activate a low pressure warning light. Code P0524 is triggered when the PCM detects oil pressure that is too low. This is a serious problem and must be addressed immediately to avoid engine damage. In the event of low oil pressure, it is important to stop and turn off the engine as quickly as possible. The Check Engine light comes on along with...

P0506 - OBD-II Trouble Code Technical Description Idle Air Control (IAC) RPM is lower than expected What does DTC P0506 mean? Code P0506 is triggered on vehicles with electronic throttle control where there is no throttle cable from the accelerator pedal to the engine. Instead, the throttle valve is controlled by sensors and electronics. This code occurs when the PCM (powertrain control module) detects that the engine idle speed is below a preset level. Typically, the idle speed should be between 750-1000 rpm. The idle air control system also controls other devices such as the air conditioner, heater fan and windshield wipers. If the idle speed drops below 750 rpm, the PCM sets a P0506 code. This…

P0501 – OBD-II Trouble Code Technical Description Vehicle Speed ​​Sensor “A” Range/Performance What does Trouble Code P0501 mean? Trouble code P0501 means that the vehicle speed read by the vehicle speed sensor (VSS) is outside the expected range, such as too high or too low. VSS transmits vehicle speed information to the engine control module (PCM/ECM) for display in the speedometer and odometer. The VSS is typically an electromagnetic sensor that uses rotation to send a signal to the PCM. It is installed in the gearbox housing and detects pulses from the rotor shaft. These impulses are transmitted through the VSS tip, which uses notches and grooves to make and break the circuit. This process allows the PCM to determine the vehicle's speed, which is then displayed on the speedometer. Code…

P0492 – OBD-II Trouble Code Technical Description Secondary Air Injection System Insufficient Flow (Bank 2) What does Trouble Code P0492 mean? This code is general for transmissions and applies to all makes and models of vehicles from 1996 onward. However, troubleshooting methods may vary depending on the specific make and model of your vehicle. The secondary air injection system, which is commonly found in Audi, BMW, Porsche and VW vehicles and can also be found in other vehicles, includes important components such as the air pump, exhaust manifold, inlet check valve, vacuum switch and electrical inlet chain for the vacuum switch, as well as many vacuum hoses. The work of this system is to supply fresh…

P0491 – OBD-II Trouble Code Technical Description Secondary Air Injection System Insufficient Flow (Bank 1) What does Trouble Code P0491 mean? The secondary air injection system is typically found on Audi, BMW, Porsche and VW vehicles and serves to inject fresh air into the exhaust system during a cold start. This allows for more complete combustion of harmful emissions. Code P0491 indicates a problem with this system, usually related to insufficient secondary air flow in bank #1, where bank #1 is the side of the engine with cylinder #1. The control system activates the air pump and controls the vacuum air injection mechanism. When it detects an inconsistency in the signal voltages, the PCM sets a P0491 code. Possible Causes Causes of P0491 may include...

P0477 – OBD-II Trouble Code Technical Description Exhaust Gas Pressure Control Valve “A” Low What does Trouble Code P0477 mean? Trouble P0477 is related to low exhaust pressure valve regulation and can occur on a variety of vehicles, including Ford, Dodge, Mercedes, Nissan and VW. This code indicates an incorrect voltage being read by the exhaust gas pressure sensor and sent to the engine control module (PCM). If this voltage is below normal, the PCM stores code P0477. The exhaust backpressure valve regulates exhaust backpressure, which helps increase interior heating and reduce windshield defrost time in low ambient temperatures. The Engine Control Module (ECM) uses information about exhaust backpressure, intake air temperature, temperature...

P0470 – OBD-II Trouble Code Technical Description Exhaust Gas Pressure Sensor Malfunction What does Trouble Code P0470 mean? This general diagnostic trouble code applies to various makes of vehicles, including Ford, Mercedes and Nissan, with different types of engines, including gasoline and diesel, starting in 2005. It is related to exhaust gas pressure and may indicate an electrical or mechanical problem. It can sometimes be accompanied by a P0471 code, which varies in duration and nature of the exhaust pressure sensor failure. Repair steps depend on the manufacturer, fuel type and wire color. Trouble code P0470 is common across different makes and models of vehicles. It indicates a problem with the exhaust gas pressure sensor and may be related to...

P0458 - OBD-II Trouble Code Technical Description Evaporative Emission Purge Control Valve Circuit Low What does DTC P0458 mean? On vehicles with evaporative emissions control (EVAP) systems, the engine draws excess fuel vapor from the gas tank to prevent emissions and reduce environmental impact. The EVAP system includes several components, including the fuel tank, charcoal canister, tank pressure sensor, purge valve, and vacuum hoses. When the engine is running, these components work together to prevent fuel vapors from escaping. When the engine starts, the purge valve on the canister opens, allowing fuel vapor to enter the engine intake manifold using a vacuum. This improves the fuel mixture and...

P0456 - OBD-II Trouble Code Technical Description Evaporative Emission Control System - Minor Leak Detected What does Trouble Code P0456 mean? This P0456 diagnostic code, although a common transmission code, can have different repair steps depending on the make and model of the vehicle. It indicates a fuel vapor leak or lack of purge flow in the evaporative emission control (EVAP) system. This system prevents fuel vapors from escaping into the atmosphere by directing them into the engine for combustion. For more accurate diagnosis and repair, the following should be considered: Therefore, a thorough examination of the EVAP system and its components is necessary to eliminate the leak and prevent emissions of fuel vapors. Possible Causes Most often, the P0456 code is caused by an incorrect...

P0455 - OBD-II Trouble Code Technical Description Typical: Evaporative Emissions Control System Leak Detected (No Purge Flow or Large Leak) Chrysler: EVAP Large Leak Detection Conditions Ford: EVAP System Leak Conditions (No Purge Flow or Large Leak) GM (Chevrolet): EVAP System Leak Detection Conditions Nissan: Evaporative Canister Purge (EVAP) System - Large Leak What does DTC P0455 mean? Code P0455 is a generic OBD-II transmission diagnostic code indicating a fuel vapor leak or lack of purge flow in the EVAP control system. The emission control system (EVAP) prevents fuel vapors from escaping from the gasoline system. Codes associated with this system include P0450, P0451, P0452, P0453, P0454, P0456, P0457…

P0454 - OBD-II Trouble Code Technical Description Evaporative Emission Control Pressure Sensor Signal Intermittent What does Trouble Code P0454 mean? DTC P0454 is a generic OBD-II code that applies to various makes of vehicles (such as Dodge, Ford, Chevrolet, VW, Audi, Toyota, etc.). It indicates an intermittent signal from the EVAP pressure sensor. The EVAP system is designed to capture and control fuel vapors so they are not released into the atmosphere. Includes charcoal canister, EVAP pressure sensor, purge valve and many tubes and hoses. If EVAP system pressure is intermittent, a P0454 code may be stored. To solve this problem, diagnostics are required to determine which component...