Archives: DTC Codes

What Does Code B1219 Mean? DTC B1219 signifies a detected electrical malfunction within the circuit of the Fuel Tank Pressure (FTP) sensor. The Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), relies on the FTP sensor to monitor pressure and vacuum levels within the fuel tank. This monitoring is […]

What Does Code B1220 Mean? DTC B1220 signifies an detected open circuit within the Fuel Tank Pressure (FTP) sensor’s electrical system. This code is typically manufacturer-specific, predominantly associated with General Motors (GM) vehicles, and relates directly to the Evaporative Emission Control (EVAP) system. The Engine Control Module (ECM), also known as the Powertrain Control Module […]

What Does Code B1222 Mean? DTC B1222 indicates a detected fault within the Fuel Temperature Sensor #1 circuit. This code signifies that the Engine Control Module (ECM) or Powertrain Control Module (PCM) has identified an electrical anomaly in the signal path or the sensor itself, preventing it from receiving a plausible or expected voltage reading […]

What Does Code B1223 Mean? DTC B1223 indicates that the Powertrain Control Module (PCM), or Engine Control Module (ECM) as it may be known, has detected an open circuit condition in the Fuel Temperature Sensor #1 circuit. The fuel temperature sensor is typically a Negative Temperature Coefficient (NTC) thermistor, meaning its electrical resistance decreases as […]

What Does Code B1224 Mean? DTC B1224 signifies a detection by the Engine Control Module (ECM) or Powertrain Control Module (PCM) of a voltage signal in the Fuel Temperature Sensor #1 circuit that is consistently at or near battery voltage. The Fuel Temperature Sensor is typically a Negative Temperature Coefficient (NTC) thermistor, meaning its electrical […]

What Does Code B1225 Mean? Diagnostic Trouble Code (DTC) B1225 signifies a detected condition where the Fuel Temperature Sensor #1 circuit is experiencing a short to ground. This fault indicates that the Powertrain Control Module (PCM), or Engine Control Module (ECM) in some applications, is receiving an abnormally low voltage signal from the fuel temperature […]

What Does Code B1226 Mean? DTC B1226 signifies a malfunction within the electrical circuit of Fuel Temperature Sensor #2. This code indicates that the Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), has detected an electrical signal from this sensor that is outside its calibrated operational range. Fuel Temperature Sensor #2 […]

What Does Code B1227 Mean? DTC B1227 signifies an “Open Circuit” condition detected by the Powertrain Control Module (PCM) or Engine Control Module (ECM) within the electrical circuit of Fuel Temperature Sensor #2. This sensor, often a Negative Temperature Coefficient (NTC) thermistor, is strategically placed within the fuel delivery system to monitor the temperature of […]

What Does Code B1228 Mean? Diagnostic Trouble Code B1228 indicates a detected electrical fault within the circuit of Fuel Temperature Sensor #2, specifically a “Short to Battery”. The Engine Control Module (ECM) or Powertrain Control Module (PCM) monitors the voltage signal from Fuel Temperature Sensor #2 (FTS2) to determine the temperature of the fuel. This […]

What Does Code B1229 Mean? DTC B1229 signifies an electrical malfunction within the circuit of Fuel Temperature Sensor #2, specifically indicating a short to ground. The Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), continuously monitors the electrical characteristics of various sensors crucial for engine operation. The Fuel Temperature […]