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The P2A03 diagnostic trouble code (DTC) indicates an issue with the oxygen sensor circuit, specifically for Bank 2, Sensor 1. This code is part of the OBD-II system, which monitors various components of your vehicle’s engine and emissions systems. When the Powertrain Control Module (PCM) detects that the upstream oxygen sensor is not providing a valid signal, it triggers this code. Understanding the P2A03 code

The P207F trouble code, defined as “Reductant Quality Performance,” is a diagnostic trouble code (DTC) that indicates a problem with the vehicle’s Selective Catalytic Reduction (SCR) system. This system is crucial for reducing nitrogen oxide (NOx) emissions in diesel engines by injecting Diesel Exhaust Fluid (DEF) into the exhaust stream. When the Powertrain Control Module (PCM) detects that the SCR system is not performing effectively,

The P0357 trouble code indicates a malfunction in the ignition coil “G” primary/secondary circuit. This code is part of the On-Board Diagnostics II (OBD-II) system and typically relates to issues with the ignition coil associated with cylinder number seven. When this code is triggered, it suggests that the Powertrain Control Module (PCM) has detected a fault in the ignition coil circuit, which can lead to

The P2201 trouble code is a diagnostic trouble code (DTC) that indicates a problem with the NOx (Nitrogen Oxide) sensor circuit range or performance in Bank 1 of a vehicle’s engine. This code is primarily associated with diesel engines, where NOx sensors play a crucial role in monitoring exhaust emissions to ensure compliance with environmental regulations. When the powertrain control module (PCM) detects that the

The P1289 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the Cylinder Head Temperature (CHT) sensor in certain Ford vehicles. This code is triggered when the Powertrain Control Module (PCM) detects that the voltage from the CHT sensor exceeds a specified threshold, typically indicating that the sensor is malfunctioning or that there is a wiring issue. In essence, this code

The P1336 trouble code is a diagnostic trouble code (DTC) that indicates a malfunction within the Crankshaft Position Sensor (CKP). This sensor plays a critical role in monitoring the crankshaft’s rotational speed and position, which is essential for the Engine Control Module (ECM) to manage ignition timing and fuel injection. When the ECM detects an issue with the CKP, it triggers the P1336 code, signaling

The P2635 trouble code is a diagnostic trouble code (DTC) that indicates a problem with the fuel pump, specifically referring to “Fuel Pump ‘A’ Low Flow / Performance.” This code is generated when the engine control module (ECM) detects that the fuel pump is not delivering the required fuel flow or pressure, which can lead to various performance issues in the vehicle. Understanding this code

The P16CF trouble code is a diagnostic trouble code (DTC) that indicates an issue with the intake rocker arm solenoid valve control circuit, specifically for valve number two. This code is primarily seen in various vehicle models, including certain Chevrolet and Honda vehicles. When the engine control module (ECM) detects a malfunction in the circuit that controls the intake rocker arm solenoid, it triggers the

The P0846 trouble code is a diagnostic trouble code (DTC) indicating a malfunction in the transmission fluid pressure sensor/switch ‘B’ circuit range or performance. This code is primarily associated with automatic transmission systems and can lead to significant issues if not addressed promptly. The transmission fluid pressure sensor plays a crucial role in monitoring the hydraulic pressure within the transmission, sending vital information to the

The P1155 trouble code is a diagnostic trouble code (DTC) that indicates a malfunction in the air/fuel ratio sensor heater circuit, specifically for Bank 2 Sensor 1. This code is part of the OBD-II system, which monitors various components of a vehicle’s engine and emissions systems. When the Engine Control Module (ECM) detects that the air/fuel ratio sensor heater circuit is not functioning correctly, it