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The P0471 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the exhaust pressure sensor circuit, specifically related to its range or performance. This code is particularly relevant for vehicles equipped with turbocharged engines, as the exhaust pressure sensor plays a crucial role in monitoring exhaust back pressure. When the powertrain control module (PCM) detects that the signal from the exhaust

The P1001 trouble code is a diagnostic trouble code (DTC) that indicates a problem with the vehicle’s Key-Off Battery Charging (KOC) system. This code is commonly encountered in vehicles equipped with advanced electrical systems, particularly hybrids, and suggests that the vehicle’s engine control module (ECM) was unable to complete a self-test when the engine was running. Understanding this code is crucial for vehicle owners and

The P1637 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the generator control circuit in a vehicle. This code typically arises when the powertrain control module (PCM) detects a malfunction in the generator’s L-terminal circuit, which is responsible for signaling the generator to produce electrical power. Understanding this code is essential for vehicle owners and DIY mechanics, as it can

The P2285 trouble code is a diagnostic trouble code (DTC) that indicates a problem with the Injector Control Pressure (ICP) sensor circuit. Specifically, it signifies that the Powertrain Control Module (PCM) has detected a voltage or resistance reading that is lower than expected within this circuit. This code is commonly associated with diesel engines, particularly those utilizing a hydraulic electronic unit injector (HEUI) system, where

The P2305 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the ignition coil “B” secondary circuit. When this code is triggered, it signifies that the powertrain control module (PCM) has detected an abnormal voltage condition in the secondary circuit of the ignition coil designated as “B.” This problem can lead to engine misfires, decreased performance, and increased emissions. Understanding the

The P1031 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the air-fuel ratio sensor’s heater circuit in bank 1 of the engine. This sensor plays a crucial role in measuring the oxygen content in the exhaust gases and relaying that information to the engine control module (ECM). The ECM uses this data to adjust the air-fuel mixture for optimal combustion,

The P0059 trouble code is a diagnostic trouble code (DTC) that indicates a problem with the heater circuit of the oxygen sensor located in Bank 2, Sensor 1 of an engine. This code is part of the OBD-II system, which monitors various components of a vehicle’s powertrain. When the Powertrain Control Module (PCM) detects an issue with the resistance in the heater circuit of the

The P203F trouble code is a diagnostic trouble code (DTC) that indicates a problem with the reductant level in diesel-powered vehicles equipped with a selective catalytic reduction (SCR) system. Specifically, this code signifies that the diesel exhaust fluid (DEF) level is too low. The DEF is crucial for reducing harmful nitrogen oxides (NOx) emissions, and its proper functioning is monitored by the powertrain control module

The P0492 trouble code refers to an issue with the secondary air injection system, specifically indicating “Secondary Air Injection System Insufficient Flow Bank 2.” This diagnostic trouble code (DTC) is triggered when the powertrain control module (PCM) detects that the secondary air injection system is not providing adequate airflow to bank 2 of the engine. The secondary air injection system plays a crucial role in

The P161B trouble code is a manufacturer-specific diagnostic trouble code (DTC) that typically indicates an issue with the engine control module (ECM) or transmission control module (TCM). This code can lead to various performance problems in your vehicle, including reduced power, stalling, or failure to start. Understanding the meaning of the P161B code, its symptoms, causes, and how to diagnose and fix it can help