Archives: DTC Codes

What Does Code P0650 Mean? The diagnostic trouble code P0650 signifies a malfunction within the Malfunction Indicator Lamp (MIL) control circuit. The MIL, commonly known as the “Check Engine Light,” is a critical component of the vehicle’s onboard diagnostic (OBD-II) system, designed to alert the driver to detected emissions-related faults or other significant powertrain issues. […]

What Does Code P0654 Mean? DTC P0654 signifies an “Engine RPM Output Circuit Malfunction.” This code is set when the Powertrain Control Module (PCM), or Engine Control Module (ECM) as it’s often referred to, detects an electrical anomaly within its dedicated engine RPM output circuit. Unlike crankshaft position sensor (CKP) input codes, P0654 specifically pertains […]

What Does Code P0655 Mean? The diagnostic trouble code P0655 signifies an “Engine Hot Lamp Output Control Circuit Malfunction.” This code is set when the Powertrain Control Module (PCM), also referred to as the Engine Control Module (ECM) or Engine Control Unit (ECU), detects an electrical fault within the circuit responsible for illuminating the Engine […]

What Does Code P0656 Mean? DTC P0656 signifies a detected malfunction within the Fuel Level Output Circuit controlled by the Powertrain Control Module (PCM), also known as the Engine Control Module (ECM). Unlike common fuel level sensor codes (which report issues with the sensor’s input signal to the PCM), P0656 specifically indicates an anomaly with […]

What Does Code P0700 Mean? DTC P0700, which stands for “Transmission Control System Malfunction,” is a generic diagnostic trouble code indicating that the Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected a fault within the transmission control system. Unlike specific component-level codes, P0700 is primarily an informational code. It signifies that the […]

What Does Code P0701 Mean? DTC P0701, an OBD-II generic Powertrain Diagnostic Trouble Code, signifies a detected malfunction within the Transmission Control System Range/Performance. This code is issued when the Powertrain Control Module (PCM) or Engine Control Module (ECM), which often integrates or communicates extensively with the Transmission Control Module (TCM), identifies that the overall […]

What Does Code P0702 Mean? DTC P0702, which stands for Transmission Control System Electrical, indicates a general electrical malfunction detected within the transmission control system. This code is triggered by the Powertrain Control Module (PCM), or in some architectures, the Engine Control Module (ECM) interacting with the Transmission Control Module (TCM), when it identifies an […]

What Does Code P0703 Mean? DTC P0703 signifies a detected malfunction within the “B” circuit of the brake switch, also commonly referred to as the brake pedal position sensor or brake light switch. The Engine Control Module (ECM) or Powertrain Control Module (PCM), and in some applications, the Transmission Control Module (TCM), monitors the electrical […]

What Does Code P0704 Mean? DTC P0704 signifies a malfunction detected by the Powertrain Control Module (PCM) or Engine Control Module (ECM) within the input circuit for the Clutch Pedal Position (CPP) switch. This code specifically indicates that the PCM has received an implausible or incorrect signal from the CPP switch, or no signal at […]

What Does Code P0705 Mean? DTC P0705 indicates a malfunction within the Transmission Range Sensor (TRS) circuit, specifically concerning the PRNDL (Park, Reverse, Neutral, Drive, Low) input to the powertrain control module (PCM) or transmission control module (TCM). The Transmission Range Sensor, often referred to as a Neutral Safety Switch or PRNDL switch, is a […]