P0130 means O2 Sensor Circuit Malfunction Bank 1 Sensor 1. The DME records it when DME sees an invalid or unresponsive mixture signal; diagnosis must separate an electrical signal fault from a real system fault.
P0113 means Intake Air Temperature Sensor 1 Circuit High Input. The DME records it when signal voltage is high and temperature reads implausibly cold; diagnosis must separate an electrical signal fault from a real system fault.
P0112 means Intake Air Temperature Sensor 1 Circuit Low Input. The DME records it when signal voltage is low and temperature reads implausibly hot; diagnosis must separate an electrical signal fault from a real system fault.
P0103 means Mass or Volume Air Flow Circuit High Input. The DME records it when reported intake air mass is implausibly high; diagnosis must separate an electrical signal fault from a real system fault.
P0102 means Mass or Volume Air Flow Circuit Low Input. The DME records it when reported intake air mass stays implausibly low; diagnosis must separate an electrical signal fault from a real system fault.
P0090 means Fuel Pressure Regulator 1 Control Circuit/Open. The DME records it when DME cannot electrically control regulator 1; diagnosis must separate an electrical signal fault from a real system fault.
P0088 means Fuel Rail/System Pressure Too High. The DME records it when pressure remains above the DME target; diagnosis must separate an electrical signal fault from a real system fault.
P0087 means Fuel Rail/System Pressure Too Low. The DME records it when pressure below the DME target under load; diagnosis must separate an electrical signal fault from a real system fault.
P0455 indicates large EVAP system leak detected. This guide identifies the recording module, distinguishing symptoms and evidence-based tests to run before replacing parts.
P0401 indicates insufficient EGR flow detected. This guide identifies the recording module, distinguishing symptoms and evidence-based tests to run before replacing parts.
P0306 indicates cylinder 6 misfire detected. This guide identifies the recording module, distinguishing symptoms and evidence-based tests to run before replacing parts.
P0305 indicates cylinder 5 misfire detected. This guide identifies the recording module, distinguishing symptoms and evidence-based tests to run before replacing parts.