If your Mercury Mountaineer’s heat only works when driving, there are five leading causes you should check.  They are low coolant, air ...

P0020 is a rarely seen OBD II trouble code that can affect the Mercury Mountaineer. It’s a variable valve timing (VVT) related code, ...

If your Mercury Mountaineer has a humming noise at high speed, it can be distracting and, depending on the cause, dangerous. We’ve outlined the most ...

P0088 is a common OBD2 trouble code that can occur in the Mercury Mountaineer. In layman’s terms, it indicates that your SUV’s fuel pressure is too ...

P0026 is a code that signals an issue with your Mercury Mountaineer’s intake valve control solenoid circuit. In layman’s terms, the circuit is not ...

P0152 is a common OBDII code that occurs in many vehicles, including the Mercury Mountaineer. It indicates that the bank 2 sensor 1 O2 sensor is ...

P0008 is a somewhat uncommon OBD2 trouble code that can occur in the Mercury Mountaineer. It indicates that the crankshaft and camshaft are not ...

P144C is a Ford-only DTC trouble code, and as such, it applies to your Mercury Mountaineer. It indicates that the EVAP canister purge check valve is ...

P0725 is a common OBD2 code that can occur in the Mercury Mountaineer. It indicates an issue with the engine speed sensor input circuit (which ...

P0705 is a very common transmission-related trouble code that can occur in the Mercury Mountaineer. In layman’s terms, it means that your ...