Mazda Miata:  Bad ECM → Symptoms + Diagnosis

Your Mazda Miata’s ECM (Engine Control Module) is its brain.  Just like a human’s brain, your Miata can’t function without it. It is sometimes referred to as the ECU or PCM.  It’s all the same thing. The ECM controls and directs your entire drivetrain (unless there is a serrate transmission controller). When an ECM starts … Read more

Mazda Miata P0353 Diagnosis

P0353 is a generic OBD2 code that indicates that ignition coil “C” has an issue with the primary or secondary wiring circuits.  It has the same meaning for the Mazda Miata as it would any other vehicle.  It is typically caused by a bad coil pack or wiring harness issue, although there can be caused … Read more

Mazda Miata P0087:  Fuel Rail/System Pressure → Too Low

P0087 is a relatively common OBD II trouble code.  This code indicates that there is an issue with getting enough fuel pressure to the fuel rails.  It’s generic, which means that it has the same meaning for the Mazda Miata as it would any other vehicle. This code is most common on vehicles that use … Read more