P0344 is an OBDII diagnostic code. It is a generic code, which means that it has the same meaning for the Mercury Grand Marquis as it would any other vehicle. If your Grand Marquis has this code, it means that the PCM (powertrain control module) has detected that the camshaft position circuit is sending an … Read more
Like all OBD-II trouble codes, P0451 has the same meaning for all vehicles. It means that your Mercury Grand Marquis‘s EVAP system has a pressure sensor that is malfunctioning in some way. P0451 is usually caused by either a bad EVAP pressure sensor, a clogged fuel tank relief valve, EVAP lines, EVAP wiring, or a … Read more
P0206 is an OBD2 trouble code. It indicates there has been a fuel injector circuit malfunction, in this case, it’s the 6’th cylinder in the firing order that is malfunctioning. P0206 is a generic code, which means that it has the same meaning for the Mercury Grand Marquis as it would for any other … Read more
P0205 is an OBD2 trouble code. It indicates there is a fuel injector that has a circuit malfunction, in this case, it’s the fifth cylinder in the firing order that is malfunctioning. P0205 is a generic code, which means that it has the same meaning for the Mercury Grand Marquis as it would for any … Read more
P0204 is an OBD II trouble code. It means that you have a fuel injector with a circuit malfunction, specifically the fourth cylinder in the firing order). It’s generic code, which means that it means the same thing for the Mercury Grand Marquis as it would for any other vehicle. When the PCM sees that … Read more
P0203 is a common OBD2 trouble code. It means the third cylinder in the firing order has a fuel injector that is malfunctioning. It’s generic code, which means that it means the same thing for the Mercury Grand Marquis as it would for any other vehicle. When the PCM sees that the voltage from … Read more
P0202 is a very common OBD2 trouble code. It indicates that cylinder 2 in the firing order has a fuel injector malfunction. It’s generic code, which means that it means the same thing for the Mercury Grand Marquis as it would for any other vehicle. When the PCM sees voltage at cylinder 2 that is … Read more
P0201 is one of the more common OBD-II trouble codes. It indicates that the first cylinder in the firing order has an injector malfunction. It’s generic, which means that it has the same meaning for the Mercury Grand Marquis as it would for any other vehicle. When the PCM sees voltage at cylinder 1 that … Read more
P0018 is a general OBD2 trouble code, which means that it has the same meaning and general symptoms for any vehicle (including the Mercury Grand Marquis) it typically occurs when the Crankshaft Position Sensor and the Camshaft Position Sensor are out of alignment by a certain number of degrees, or if there is a sensor … Read more
P0019 is a generic OBD II trouble code. It is typically thrown when the Crankshaft Position Sensor and the Camshaft Position Sensor are out of alignment by a certain number of degrees, if there is an issue with the wiring, or one of the sensors themselves may have gone bad. We’ll explore all the … Read more