P0057 is a generic trouble code, which means that it has the same definition for the Mercury Mariner as it would any other vehicle. It indicates that the O2 sensor at bank 2 sensor 2 has a heated element that is sending a signal back to the ECM that is below its normal operating range. … Read more
P0037 is a generic trouble code, which means that it has the same definition for the Mercury Mariner as it would any other vehicle. It indicates that the O2 sensor at bank 1 sensor 2 has a heated element that is sending a signal back to the ECM that is below its normal operating range. … Read more
P0022 is a relatively common general OBD2 trouble code. If your Mariner has Variable Valve Timing (We’ll be referring to it as VVT a lot), it can get this code. What is VVT? VVT changes the frequency and distribution of gases entering and exiting the combustion chamber. It allows the engine to act like it … Read more
P0050 is a common OBD2 trouble code. It’s generic, which means it has the same definition for the Mercury Mariner as any other vehicle. The cause of P0050 is almost always a bad heated oxygen sensor or wiring issue. P0050 Definition: Heater Control – Circuit – Bank 2 Sensor 1 P0050 indicates no signal coming … Read more
P0030 is a very common OBD2 trouble code. It’s generic, which means it has the same definition for the Mercury Mariner as any other vehicle. This code is almost always caused by a bad heated oxygen sensor or wiring issue. P0030 Definition: Heater Control – Circuit – B1S1 P0030 indicates no signal coming from your … Read more
P1299 is a very common Ford-only trouble code. It indicates that your Mercury Mariner has entered “Cylinder Head Overtemperature Protection”, which is a fail-safe mode designed to keep it from overheating so much that the engine gets damaged. It is known to appear BEFORE the temp gauge or warning light alerts you to an overheating … Read more
P0730 is a standard OBD2 trouble code. It indicates that your Mercury Mariner’s PCM has detected an incorrect gear ratio. While this code can appear if you changed your Mariner’s transmission or rear end gearing without re-flashing the computer, it almost always has nothing to do with an incorrect gear ratio. An internal transmission problem … Read more
P0480 is a relatively common OBDII trouble code. It indicates that your Mercury Mariner’s “cooling fan 1 control circuit” is malfunctioning. It’s a generic code, so it has the same meaning for any vehicle made for the 1996 model year and up. P0480 Definition: Cooling Fan 1 – Control Circuit Malfunction Here is the … Read more
P0320 is a relatively common ignition-related trouble code. P0320 indicates that your Mercury Mariner’s ignition/distributor engine speed circuit is malfunctioning. P0320 is most likely caused by the engine speed sensor, or a wiring issue. P0320 Definition: Ignition/Distributor Engine Speed – Input Circuit Nearly all modern vehicles, including the Mercury Mariner, use individual coil packs which … Read more
P0717 is a somewhat rare OBD2 trouble code that can occur in the Mercury Mariner. While it illuminates the check engine light, the code warns of a transmission-related error, specifically that the input shaft/turbine speed sensor is not sending a signal. P0717 is a generic code (it has the same meaning for any vehicle made … Read more