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.
P0070 means Ambient Air Temperature Sensor Circuit. The DME records it when ambient temperature signal is electrically implausible; diagnosis must separate an electrical signal fault from a real system fault.
P0068 means MAP/MAF - Throttle Position Correlation. The DME records it when calculated airflow, manifold pressure and throttle angle disagree; diagnosis must separate an electrical signal fault from a real system fault.
P0030 means HO2S Heater Control Circuit Bank 1 Sensor 1. The DME records it when heater current or warm-up behavior is missing for bank 1 sensor 1; diagnosis must separate an electrical signal fault from a real system fault.