Archives: DTC Codes

What Does Code P0188 Mean? Diagnostic Trouble Code (DTC) P0188 signifies that the Engine Control Module (ECM), often referred to as the Powertrain Control Module (PCM), has detected an excessively high voltage signal from the Fuel Temperature Sensor “B” circuit. This “high input” condition indicates that the voltage returned to the ECM from the sensor […]

What Does Code P0189 Mean? The diagnostic trouble code P0189, “Fuel Temperature Sensor B Circuit Intermittent,” indicates that the Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected an inconsistent or erratic electrical signal from the Fuel Temperature Sensor (FTS) designated as “B.” This sensor is typically a thermistor, which changes its electrical […]

What Does Code P0190 Mean? DTC P0190 signifies a detected malfunction within the Fuel Rail Pressure (FRP) sensor circuit. This code indicates that the Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), has identified an electrical anomaly in the circuit responsible for monitoring fuel pressure within the common fuel […]

What Does Code P0193 Mean? DTC P0193, defined as “Fuel Rail Pressure Sensor Circuit High Input,” indicates that the Engine Control Module (ECM) or Powertrain Control Module (PCM) has detected an abnormally high voltage signal from the Fuel Rail Pressure (FRP) sensor. This sensor, often a three-wire transducer, is critical in both Gasoline Direct Injection […]

What Does Code P0198 Mean? The diagnostic trouble code P0198 signifies a fault within the Engine Oil Temperature (EOT) Sensor ‘A’ Circuit, specifically indicating a “Circuit High” condition. This means the Engine Control Module (ECM) or Powertrain Control Module (PCM) is detecting a voltage signal from the EOT sensor that is excessively high, exceeding the […]

What Does Code P0199 Mean? DTC P0199 indicates an intermittent fault within the Engine Oil Temperature (EOT) sensor circuit. The Powertrain Control Module (PCM), also referred to as the Engine Control Module (ECM) on some platforms, continuously monitors the voltage signal from the EOT sensor. This sensor is typically a Negative Temperature Coefficient (NTC) thermistor, […]

What Does Code P0201 Mean? The diagnostic trouble code P0201 signifies an electrical malfunction within the primary control circuit of the fuel injector for Cylinder 1. The Engine Control Module (ECM) or Powertrain Control Module (PCM) continuously monitors the electrical integrity and operational characteristics of each fuel injector circuit. During active operation, the ECM commands […]

What Does Code P0203 Mean? The diagnostic trouble code P0203 indicates that the Engine Control Module (ECM) or Powertrain Control Module (PCM) has detected an electrical malfunction in the control circuit for the fuel injector supplying cylinder #3. The ECM/PCM continuously monitors the electrical integrity and operational characteristics of each fuel injector circuit. When the […]

What Does Code P0218 Mean? DTC P0218 signifies that the Powertrain Control Module (PCM), or in some applications the dedicated Transmission Control Module (TCM), has detected an excessively high transmission fluid temperature (TFT). This condition is determined when the input signal from the Transmission Fluid Temperature (TFT) sensor indicates that the fluid’s thermal state has […]

What Does Code P0227 Mean? DTC P0227 signifies that the Powertrain Control Module (PCM), or Engine Control Module (ECM) in some vehicle architectures, has detected a voltage signal from the “C” circuit of either the Throttle Position Sensor (TPS) or the Accelerator Pedal Position (APP) sensor that is below the manufacturer’s specified lower operating threshold. […]