Archives: DTC Codes

What Does Code P0770 Mean? DTC P0770 signifies a detected malfunction within the electrical circuit or mechanical operation of the “Shift Solenoid E” in an electronically controlled automatic transmission. The Powertrain Control Module (PCM) or Transmission Control Module (TCM), which are often integrated, monitors the electrical characteristics (resistance, voltage, current) of each shift solenoid and […]

What Does Code P0771 Mean? The diagnostic trouble code P0771 signifies that the Powertrain Control Module (PCM), often referred to as the Engine Control Module (ECM) or Transmission Control Module (TCM), has detected an anomaly in the performance or operation of Shift Solenoid E. This specific solenoid is an electro-hydraulic component typically responsible for regulating […]

What Does Code P0772 Mean? Diagnostic Trouble Code P0772 indicates that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an abnormality with Shift Solenoid “E,” specifically that it is in a “Stuck On” state. In modern automatic transmissions, shift solenoids are electro-hydraulic valves responsible for controlling the flow of transmission fluid […]

What Does Code P0773 Mean? DTC P0773 indicates an electrical malfunction within the circuit of Shift Solenoid “E” in an automatic transmission. The Powertrain Control Module (PCM) or Transmission Control Module (TCM) continuously monitors the electrical characteristics of all shift solenoid circuits, including resistance, voltage, and current draw. When the PCM/TCM detects an electrical reading […]

What Does Code P0774 Mean? Diagnostic Trouble Code P0774 signifies an intermittent malfunction within the control circuit of Shift Solenoid “E” in an automatic transmission. This code is set by the Transmission Control Module (TCM), which is often integrated into the Powertrain Control Module (PCM/ECM). Shift Solenoid “E” is a crucial electro-hydraulic actuator responsible for […]

What Does Code P0775 Mean? Diagnostic Trouble Code (DTC) P0775 indicates a detected malfunction within the circuit of the “Pressure Control Solenoid ‘B’”. This solenoid is an electro-hydraulic component typically integrated into the automatic transmission’s valve body. Its primary function is to precisely regulate hydraulic line pressure to various clutch packs or bands within the […]

What Does Code P0776 Mean? DTC P0776 signifies that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected a performance issue with the “B” Pressure Control Solenoid within the automatic transmission. This specific solenoid is integral to the transmission’s hydraulic system, responsible for regulating hydraulic pressure to various clutch packs and bands, […]

What Does Code P0777 Mean? DTC P0777 indicates that the Transmission Control Module (TCM), often integrated with the Powertrain Control Module (PCM), has detected an issue with the Pressure Control (PC) Solenoid “B” circuit, specifically signifying that the solenoid is “stuck on.” In an automatic transmission, PC solenoids are critical electromechanical components responsible for regulating […]

What Does Code P0778 Mean? DTC P0778 indicates an electrical fault within the circuit of the Transmission Pressure Control Solenoid “B”. This code signifies that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an abnormal electrical condition in the circuit dedicated to Solenoid “B”. Pressure Control Solenoids (PCS) are critical components […]

What Does Code P0779 Mean? DTC P0779 signifies an intermittent electrical or performance fault within the Pressure Control (PC) Solenoid B circuit or the solenoid itself. In modern automatic transmissions, Pressure Control Solenoids, also known as Electronic Pressure Control (EPC) solenoids, are crucial electromechanical components responsible for regulating hydraulic line pressure. This line pressure is […]