Mercury Mariner P0175: Causes, Diagnosis, How to Fix

P0175 is a common trouble code that can appear in the Mercury Mariner. It’s generic, so it has the same meaning for your vehicle as it would any other automobile. There are MANY issues that can cause P0175 in the Mariner. If there are other codes present, use them to eliminate potential causes and save … Read more

Mercury Mariner P0441: Meaning, Causes, How to Fix

P0441 is one of the more common OBD II codes that can occur in the Mercury Mariner.  It is frequently caused by a loose or bad gas cap, cracked or disconnected EVAP system hoses, vacuum leaks, or a bad purge valve. Always start by taking a look at the gas cap. P0441 is related to … Read more

Mercury Mariner P0446: Meaning, Causes, How to Fix

A prevalent issue with the Mercury Mariner is the P0446 code. This code corresponds to a specific number obtained when connecting your Mariner to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Definition P0446: EVAP System – Vent Control Circuit – Malfunction Symptoms Usually none Common Causes Bad EVAP Vent Control … Read more

Mercury Mariner P0401: Meaning, Causes, How to Fix

P0401 is a very common OBDII trouble code that’ll pop up in the Mercury Mariner. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. The EGR system in your vehicle is responsible for recirculating exhaust gasses in order to lower the vehicle’s emissions output. There are three … Read more

Mercury Mariner P0341: CPS – Range/Performance

P0341 is a somewhat common OBDII diagnostic code in the Mercury Mariner. It means that there is a Range/Performance problem. In layman terms this means that there is a problem with the signal coming from the Camshaft Position Sensor (CPS).   OBDII P0341 means that there is a problem with the Camshaft Position Sensor (CPS) … Read more

Mercury Mariner P0340 Code: Diagnosis, Causes, How to Fix

One of the more common engine management trouble codes that can occur in the Mercury Mariner is P0340. It’s a generic code, which means it has the same definition for every car or truck made after 1996. P0340 is related to the camshaft position sensor and points to an issue with the wiring harness connected … Read more