P0452 means Evaporative Emission System Pressure Sensor/Switch Low Input. The DME records it when the EVAP pressure-sensor signal stays electrically low relative to the commanded tank condition; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0451 means Evaporative Emission System Pressure Sensor/Switch Range/Performance. The DME records it when tank-pressure feedback moves outside its rational range or does not respond correctly to purge and vent changes; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0450 means Evaporative Emission System Pressure Sensor/Switch Malfunction. The DME records it when tank-pressure feedback is electrically implausible or unavailable during EVAP monitoring; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0370 means Timing Reference High Resolution Signal A Malfunction. The DME records it when the high-resolution engine-position signal A is missing, distorted or inconsistent with the expected timing pattern; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0351 means Ignition Coil A Primary/Secondary Circuit Malfunction. The DME records it when the coil A primary current or secondary ignition response does not follow the DME command; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0350 means Ignition Coil Primary/Secondary Circuit Malfunction. The DME records it when the DME detects an implausible primary load or combustion response in the ignition-coil system; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0262 means Cylinder 1 Injector Circuit High. The DME records it when the cylinder 1 injector circuit remains electrically high or fails to sink current as commanded; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0261 means Cylinder 1 Injector Circuit Low. The DME records it when the cylinder 1 injector control circuit is held electrically low or draws an implausible load; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0219 means Engine Overspeed Condition. The DME records it when recorded engine speed exceeds the permitted operating range for the calibrated engine; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0217 means Engine Overtemperature Condition. The DME records it when the calculated or measured engine temperature exceeds the protection strategy limit for the specific engine; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0208 means Injector Circuit/Open Cylinder 8. The DME records it when injector 8 current response remains open or implausible during actuation; diagnosis must prove the named circuit or mechanism before parts are replaced.
P0207 means Injector Circuit/Open Cylinder 7. The DME records it when injector 7 does not produce the expected electrical load when commanded; diagnosis must prove the named circuit or mechanism before parts are replaced.