Archives: DTC Codes

What Does Code B1241 Mean? DTC B1241 indicates a detected electrical anomaly within the rear wiper washer pump relay circuit, specifically a short to battery. This means the Body Control Module (BCM) or a dedicated Wiper Control Module (WCM) has detected an unexpected voltage signal, typically at or near battery voltage, on the output side […]

What Does Code B1242 Mean? DTC B1242 signifies an electrical circuit malfunction related to the air flow recirculation door actuator within the vehicle’s heating, ventilation, and air conditioning (HVAC) system. This code specifically indicates a “driver circuit failure,” meaning the HVAC control module (which may be integrated into the Body Control Module (BCM) or Powertrain […]

What Does Code B1243 Mean? DTC B1243 signifies an “Express Window Down Switch Circuit Short to Battery.” This diagnostic trouble code indicates that the Body Control Module (BCM), or in some vehicle architectures, a Door Control Module (DCM), has detected an unintended high voltage state, approximately equal to battery voltage, on the dedicated signal circuit […]

What Does Code B1244 Mean? DTC B1244 indicates a detected failure within the rear wiper motor run relay circuit. This code is typically set by the Body Control Module (BCM), Integrated Power Module (IPM), or a similar dedicated body electrical control unit, rather than the Powertrain Control Module (PCM) or Engine Control Module (ECM), as […]

What Does Code B1245 Mean? DTC B1245 signifies a fault within the rear wiper motor run relay circuit, specifically indicating a short to battery voltage. This code is typically set by the Body Control Module (BCM) or General Electronic Module (GEM), which is responsible for monitoring and controlling various body electrical functions, including the rear […]

What Does Code B1246 Mean? Diagnostic Trouble Code (DTC) B1246 signifies a detected fault within the dim panel potentiometer switch circuit. This circuit is an integral part of the vehicle’s interior illumination system, responsible for controlling the brightness of various display elements such as the instrument panel, radio, HVAC controls, and other cabin switch backlighting. […]

What Does Code B1247 Mean? DTC B1247 indicates an open circuit condition detected within the instrument panel dimmer switch circuit. This diagnostic trouble code falls under the “B” (Body) category, signifying an issue with a body electrical system rather than the powertrain. The primary monitoring module for this circuit is typically the Body Control Module […]

What Does Code B1248 Mean? DTC B1248 signifies a detected electrical fault within the circuit of the passenger’s seatback autoglide rearward switch, specifically indicating a short to ground. While retrieved via the On-Board Diagnostic II (OBD-II) system, which primarily communicates with the Powertrain Control Module (PCM) or Engine Control Module (ECM) for powertrain-related issues, a […]

What Does Code B1249 Mean? DTC B1249 indicates a malfunction within the heating, ventilation, and air conditioning (HVAC) system, specifically related to the blend door actuator circuit or performance. This code is typically set when the vehicle’s HVAC control module, Body Control Module (BCM), or Powertrain Control Module (PCM) detects an issue with the operation […]

What Does Code B1250 Mean? DTC B1250 is a Body Diagnostic Trouble Code that indicates an electrical circuit failure for the internal cabin air temperature sensor. This sensor is a critical component of the vehicle’s automatic climate control system, often integrated into the HVAC (Heating, Ventilation, and Air Conditioning) control module or located separately within […]