P2106 is a somewhat uncommon OBD-II code. It is not manufacturer-specific, so it has the same meaning for your Mercury Grand Marquis as it would any other vehicle. It is an indication that limp mode/failsafe mode has been activated. There is a myriad of problems that can cause P2106. The throttle actuator itself is rarely … Read more
Modern vehicles use knock sensors to detect engine detonation. This allows the PCM (powertrain control module) to run very aggressive spark timing. If you are concerned that your Mercury Grand Marquis has a bad knock sensor, we’ve listed them out below. A knock sensor works by listening to your engine and determining if your Grand … Read more
No matter where you live if your Mercury Grand Marquis’s AC compressor is not turning on, it can turn a pleasant commute into a nightmare (particularly if you have kids that are riding with you). The AC compressor pulley is always being turned by either the serpentine belt or a dedicated belt (it’s going to … Read more
U0101 is a generic powertrain code, which means it has the same definition for the Mercury Grand Marquis as it would any other vehicle. It means that your Grand Marquis’s TCM (Transmission Control Module) can’t communicate with the rest of the vehicle, usually due to a bad wiring harness or an issue with the TCM … Read more
P219B is a generic OBD2 trouble code. This code indicates that your Mercury Grand Marquis’s air/fuel ratio is out of balance (too rich or too lean) on the bank 2 side of the engine in question. Your Grand Marquis is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors … Read more
P219A is a generic OBDII code. The code indicates that your Mercury Grand Marquis’s air/fuel ratio is out of balance (too rich or too lean). Your Grand Marquis is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are reporting the problem with the air-fuel ratio. With … Read more
U0100 is a generic diagnostic trouble code, meaning it has the same definition for any vehicle made in the 1996 model year or newer (including the Mercury Grand Marquis). This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. When a vehicle … Read more
P2099 is a generic OBD II code. It has the same meaning for the Mercury Grand Marquis as it would any other vehicle. It specifically indicates that your Grand Marquis detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter on the bank 2 side of the engine is too rich. (too … Read more
P2097 is a generic OBD II code, which means that it has the same meaning for the Mercury Grand Marquis as it would any other vehicle. It specifically indicates that your Grand Marquis detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter is too rich. (too much fuel for the amount … Read more
P2098 is a generic OBD II code. It specifically indicates that your Grand Marquis detected a lean condition after the catalytic converter (too much air for the amount of fuel present). P2098 Definition This particular code is generic, so it has the same meaning for your Mercury Grand Marquis as any other vehicle. There are … Read more