Your Cadillac STS’s ECM (Engine Control Module) is its brain. Just like a human’s brain, your STS 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
P0354 is a generic OBD2 code that indicates that ignition coil “D” has an issue with the primary or secondary wiring circuits. If your Cadillac STS has thrown this code, it may be accompanied by P0304. P0354 is a relatively straightforward diagnosis and is typically caused by a bad coil pack or wiring harness issue, … Read more
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 Cadillac STS 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
P0351 is a generic OBD II trouble code, which means that it means the same thing for the Cadillac STS as it would any other vehicle. It indicates that ignition coil “A” is malfunctioning. It is typically caused by a bad coil pack or wiring harness issue, although there can be other causes as well. … Read more
P0207 is an OBD II trouble code. It indicates there is a fuel injector circuit malfunction, in this case,it would be the seventh cylinder that is malfunctioning. P0207 is a generic code, which means that it has the same meaning for the Cadillac STS as it would for any other vehicle. When the PCM/ECM sees … Read more
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 Cadillac STS as it would any other vehicle. This code is most common on vehicles that use … Read more
P0445 is a common OBD II trouble code. It’s generic, which means that it has the same meaning for the Cadillac STS as it would for any other vehicle. It indicates that there is a short circuit in the Evaporative Emissions Control (EVAP) System. P0445 is typically caused by a short circuit (as the code … Read more
P0345 is a somewhat common and difficult trouble code to diagnose. The Cadillac STS is no exception to this rule. It indicates that there is an issue with the camshaft position sensor A on Bank 2. It is usually caused by a wiring problem or the CPS itself. OBDII P0345 means that there is … Read more
P0344 is an OBDII diagnostic code. It is a generic code, which means that it has the same meaning for the Cadillac STS as it would any other vehicle. If your STS has this code, it means that the PCM (powertrain control module) has detected that the camshaft position circuit is sending an intermittent signal. … Read more
Like all OBD-II trouble codes, P0451 has the same meaning for all vehicles. It means that your Cadillac STS‘s EVAP system has a pressure sensor that is malfunctioning in some way. P0451 is usually caused by either a bad EVAP pressure sensor, a clogged fuel tank relief valve, EVAP lines, EVAP wiring, or a bad … Read more