Archives: DTC Codes

What Does Code P1373 Mean? DTC P1373 signifies an “Ignition Coil – Cylinder 3 – Early Activation Fault.” This code is set by the Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), when it detects that the ignition coil for cylinder 3 is activating or discharging significantly earlier than commanded. The […]

What Does Code P1374 Mean? DTC P1374 signifies an “Early Activation Fault” specifically related to the Crankshaft Position (CKP) sensor signal and the ignition coil for Cylinder 4. This code is set by the Engine Control Module (ECM) or Powertrain Control Module (PCM) when it detects that the primary ignition circuit for Cylinder 4 is […]

What Does Code P1375 Mean? The diagnostic trouble code P1375, “Ignition Coil – Cylinder 5 – Early Activation Fault,” indicates that the Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected an anomaly in the primary ignition circuit for cylinder 5, specifically that the ignition coil is being activated and de-activated (leading to […]

What Does Code P1376 Mean? DTC P1376 indicates an “Ignition Coil – Cylinder 6 – Early Activation Fault”. This code signifies that the Powertrain Control Module (PCM), also referred to as the Engine Control Module (ECM), has detected an unintended or premature activation of the ignition coil for cylinder number 6. Under normal operating conditions, […]

What Does Code P1380 Mean? The diagnostic trouble code P1380, “Misfire Detected – Rough Road Data Not Available,” indicates a critical issue within the Engine Control Module’s (ECM) or Powertrain Control Module’s (PCM) misfire detection strategy. Modern engine management systems meticulously monitor engine speed fluctuations via the crankshaft position sensor (CKP) to identify combustion inconsistencies, […]

What Does Code P1381 Mean? The diagnostic trouble code P1381 indicates a condition where the Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), has detected an anomaly within the Variable Cam Timing (VCT) system on Bank 1, specifically identifying an “Overadvanced” state. This means the camshaft on Bank 1 […]

What Does Code P1382 Mean? DTC P1382 signifies a detected electrical malfunction within the circuit of Variable Cam Timing (VCT) Solenoid #1. The Engine Control Module (ECM) or Powertrain Control Module (PCM) is continuously monitoring the electrical characteristics of the VCT solenoid’s control circuit. This solenoid, often referred to as an Oil Control Valve (OCV), […]

What Does Code P1383 Mean? The diagnostic trouble code (DTC) P1383 signifies a condition where the Engine Control Module (ECM) or Powertrain Control Module (PCM) has detected that the Variable Cam Timing (VCT) or Variable Valve Timing (VVT) system on Bank 1 is “Over-Retarded.” Bank 1 refers to the engine bank that contains cylinder #1. […]

What Does Code P1384 Mean? The diagnostic trouble code P1384 signifies a malfunction within the Variable Valve Timing and Lift Electronic Control (VTEC) system, specifically related to the “A” circuit. In many Honda and Acura applications, where this code is predominantly found, “A” typically refers to the VTEC pressure switch or the VTEC solenoid itself, […]

What Does Code P1385 Mean? DTC P1385 signifies a malfunction within the Variable Cam Timing (VCT) Solenoid ‘B’ circuit or its operational performance. The Engine Control Module (ECM) or Powertrain Control Module (PCM) sets this code when it detects an electrical anomaly in the VCT Solenoid ‘B’ circuit, such as an open circuit, a short […]