Archives: DTC Codes

What Does Code B1261 Mean? DTC B1261 indicates a detected electrical short to ground within the circuit of the Solar Radiation Sensor. This sensor, often referred to as a sunload sensor or ambient light sensor, is a crucial component of a vehicle’s automatic climate control system, and in some applications, may also influence automatic headlamp […]

What Does Code B1262 Mean? DTC B1262 signifies a detected malfunction within the circuit controlling the defrost mode door servo motor, commonly referred to as an actuator. This specific servo motor is an integral component of the vehicle’s Heating, Ventilation, and Air Conditioning (HVAC) system, responsible for precisely positioning the airflow blend door that directs […]

What Does Code B1263 Mean? DTC B1263 signifies a “Servo Motor Vent Circuit Failure” within the vehicle’s heating, ventilation, and air conditioning (HVAC) system. This code specifically indicates an electrical malfunction in the control or feedback circuit of a servo motor responsible for operating a vent door or blend door within the HVAC plenum. Modern […]

What Does Code B1264 Mean? DTC B1264, or “Servo Motor Foot Circuit Failure,” indicates that the HVAC Control Module (or Body Control Module, BCM, depending on vehicle architecture) has detected an electrical fault within the circuit controlling a specific servo motor responsible for regulating airflow to the footwell or floor vents. This code specifically points […]

What Does Code B1265 Mean? The diagnostic trouble code (DTC) B1265, “Servo Motor Coolair Bypass Circuit Failure,” indicates that the vehicle’s Powertrain Control Module (PCM) or a dedicated HVAC control module (HCM, also known as the A/C Amplifier in some systems) has detected an electrical fault within the circuit controlling the cool air bypass servo […]

What Does Code B1266 Mean? DTC B1266 indicates a detected electrical circuit malfunction within the servo motor responsible for controlling an air intake component on the left side of the engine. The Engine Control Module (ECM), or Powertrain Control Module (PCM), identifies this fault when the electrical parameters (voltage, resistance, current) of the designated servo […]

What Does Code B1267 Mean? DTC B1267 indicates a detected electrical circuit failure associated with the “Right Air Intake Servo Motor” or “Right Intake Manifold Runner Control (IMRC) Motor.” This code is typically set by the Powertrain Control Module (PCM) or Engine Control Module (ECM) when it detects an abnormal electrical condition within the dedicated […]

What Does Code B1268 Mean? DTC B1268 indicates a detected electrical fault within the defrost mode door servo motor potentiometer circuit. In modern automotive Heating, Ventilation, and Air Conditioning (HVAC) systems, airflow is directed by various mode doors, each actuated by a dedicated servo motor. These servo motors typically incorporate a potentiometer, which functions as […]

What Does Code B1269 Mean? DTC B1269 signifies an “Open Circuit” condition detected within the potentiometer feedback circuit of the defrost mode door servo motor. In modern HVAC systems, the defrost mode door actuator is typically a servo motor assembly that integrates a potentiometer to provide precise positional feedback to the HVAC Control Module (sometimes […]

What Does Code B1270 Mean? DTC B1270 signifies a detected malfunction within the defrost mode servo motor’s potentiometer circuit, specifically indicating a “Short To Battery” condition. In modern automotive HVAC systems, the defrost mode is typically controlled by an electric servo motor (actuator) that manipulates a blend door or mode door to direct airflow to […]