P0400 means Exhaust Gas Recirculation Flow Malfunction. The DME records it when commanded EGR flow does not produce the expected air-mass response; diagnosis must separate an electrical signal fault from a real system fault.
P0341 means Camshaft Position Sensor A Circuit Range/Performance Bank 1. The DME records it when intake-cam position signal disagrees with the expected crank/cam relationship; diagnosis must separate an electrical signal fault from a real system fault.
P0336 means Crankshaft Position Sensor A Circuit Range/Performance. The DME records it when crank position timing or waveform is outside the expected range; diagnosis must separate an electrical signal fault from a real system fault.
P0313 means Misfire Detected with Low Fuel. The DME records it when combustion loss occurs while the recorded fuel level is low; diagnosis must separate an electrical signal fault from a real system fault.
P0307 means Cylinder 7 Misfire Detected. The DME records it when crankshaft acceleration identifies repeated combustion loss on cylinder 7; diagnosis must separate an electrical signal fault from a real system fault.
P0201 means Injector Circuit/Open Cylinder 1. The DME records it when DME detects an open or invalid electrical response at injector 1; diagnosis must separate an electrical signal fault from a real system fault.
P0175 means System Too Rich Bank 2. The DME records it when bank 2 correction cannot remove enough fuel; diagnosis must separate an electrical signal fault from a real system fault.
P0170 means Fuel Trim Malfunction Bank 1. The DME records it when bank 1 fuel correction reaches an implausible control condition; diagnosis must separate an electrical signal fault from a real system fault.
P0136 means O2 Sensor Circuit Malfunction Bank 1 Sensor 2. The DME records it when downstream oxygen signal is electrically or dynamically implausible; diagnosis must separate an electrical signal fault from a real system fault.
P0134 means O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1. The DME records it when bank 1 sensor 1 shows no usable activity after warm-up; diagnosis must separate an electrical signal fault from a real system fault.
P0131 means O2 Sensor Circuit Low Voltage Bank 1 Sensor 1. The DME records it when bank 1 sensor 1 signal remains low while mixture control expects response; diagnosis must separate an electrical signal fault from a real system fault.
P0122 means Throttle/Pedal Position Sensor/Switch A Circuit Low Input. The DME records it when position channel A remains implausibly low against its redundant channel; diagnosis must separate an electrical signal fault from a real system fault.