What are P codes?

P-codes are similar to zip codes and postal codes and are part of a data management system that provides unique reference codes to individual locations. These codes provide a systematic means of linking and exchanging data and analyzing relationships between them.

What is diagnostic trouble codes on cars?

DTC (diagnostic trouble codes), also known as OBDII codes, are your car’s system for alerting you of vehicle issues. There are typically limits for each system within your vehicle. Trouble codes can tell you about any system issues within your vehicle, including airbags and brakes.

What kind of oil does a 1993 Grand Marquis take?

Engine Oil

Viscosity:	5W-20 (All TEMPS) This specification has been updated from 5W-30 to 5W-20 per a Technical Service Bulletin from the manufacturer 5W-20 is the preferred viscosity.
Capacity:	5 quarts (with filter)After refill check oil level.
Torque:	10 ft/lbs (Oil Drain Plug)

Is a Mercury Grand Marquis a reliable car?

With its body-on-frame chassis, the Grand Marquis is a true throwback. Yet, as Edmunds points out, it’s dependable, durable, and, best of all, simple. There’s a reason why so many police departments favored its use as a squad car.

How do I find my cars code?

It’s all in the engine code (sometimes referred to as engine number) and vehicle identification number (VIN). You can find the VIN in the lower corner of your windshield on the driver’s side. In the series of numbers and letters, the tenth from the left denotes the model year and the eighth is the engine code.