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The P0990 trouble code is a diagnostic trouble code (DTC) that indicates a problem with the Transmission Fluid Pressure Sensor/Switch “E” Circuit. This code is triggered when the Powertrain Control Module (PCM) detects an abnormal voltage signal from the transmission fluid pressure sensor, which can lead to various transmission issues. Understanding this code is crucial for vehicle owners and DIY mechanics, as it can affect

The P00171 trouble code is an OBD-II diagnostic code that indicates a problem with the fuel system, specifically a lean condition in the air-fuel mixture on Bank 1 of the engine. This means that the engine is receiving too much air or not enough fuel, which can lead to various performance issues and increased emissions. Understanding this code is crucial for vehicle owners and DIY

The P0219 trouble code indicates an “Engine Overspeed Condition.” This diagnostic trouble code (DTC) is set by the Powertrain Control Module (PCM) when it detects that the engine’s crankshaft is rotating at a speed significantly higher than expected. This condition can lead to severe engine damage if not addressed promptly. Understanding the causes, symptoms, and solutions for this code is essential for vehicle owners and

The P1559 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the fuel composition sensor circuit in a vehicle. This code can arise in various makes and models, particularly in vehicles equipped with advanced engine management systems. Understanding the implications of this code is essential for vehicle owners and DIY mechanics, as it can lead to performance issues and potentially costly

The P01442 trouble code is part of the On-Board Diagnostics II (OBD-II) system and is primarily associated with the secondary air injection system. This code indicates that there is a malfunction related to the air injection system, specifically that the secondary air injection valve is stuck closed on bank 1. This issue can lead to increased emissions and may affect vehicle performance, making it crucial

The P1772 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the transmission system, specifically related to the low coast brake solenoid valve in Nissan vehicles. This code can lead to various transmission problems, including harsh or erratic shifting, and is often triggered by issues with wiring, connectors, or the solenoid itself. Understanding this code is crucial for vehicle owners and

The P0789 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the Shift Timing Solenoid “A” in a vehicle’s automatic transmission system. This solenoid plays a crucial role in managing the timing of gear shifts, which is essential for smooth and efficient operation of the transmission. When the Powertrain Control Module (PCM) detects an intermittent problem with this solenoid, it triggers

The P2A00 diagnostic trouble code (DTC) indicates an issue with the oxygen sensor circuit, specifically related to Bank 1 Sensor 1. This code is part of the OBD-II system and applies to a wide range of vehicles manufactured from 1996 onward. When the powertrain control module (PCM) detects that the upstream oxygen sensor is not functioning within its expected range or performance, it triggers this

The P2087 code is a diagnostic trouble code (DTC) that indicates an issue with the exhaust gas temperature (EGT) sensor circuit, specifically for Bank 2 Sensor 2. This code is part of the OBD-II system, which monitors the performance of various components in a vehicle’s powertrain. When the engine control module (ECM) detects an intermittent signal from the EGT sensor, it triggers the P2087 code.

The P214900 trouble code, also known as P2149, is a diagnostic trouble code (DTC) that indicates a malfunction in the fuel injector group “B” supply voltage circuit. This code is triggered when the powertrain control module (PCM) detects an issue with the voltage supply to the fuel injectors in this specific group. Understanding this code is crucial for vehicle owners and DIY mechanics, as it