U1000 Code (Symptoms, Causes, and How to Fix)

U1000 code

Though automotive design and manufacturing processes have advanced significantly over the past several decades, even the best of vehicles are far from mechanically bulletproof. Therefore, we as motorists, attempt to carefully maintain our vehicles, while also expecting the occasional breakdown. Luckily, today’s vehicles feature onboard diagnostic systems, which are actually capable of relaying specific trouble … Read more

P2509 Code (Symptoms, Causes, and How to Fix)

P2509 code

Few things can cause your heart to sink in your chest like a sudden check engine light on the dash. But once you claw your heart back into place and get the code read, you’ve still only completed half the battle. Because what does a code P2509 mean, and how do you fix it? We’ll … Read more

PCM vs ECM vs ECU vs TCM (What’s the Difference?)

PCM vs ECM vs ECU vs TCM

Before vehicle computers were invented, cars and trucks used a system of mechanical and pneumatic devices to manage systems such as valve timing and idle speed.  Now, modern vehicles have a complex system of sensors and actuators connected to computers which enable the vehicles to perform well and efficiently. These electronics are confusing enough without … Read more

6 Symptoms of a Bad PCM (and Replacement Cost)

bad PCM symptoms

The Powertrain Control Module (PCM) is a sophisticated piece of machinery. It receives data from a range of sensors. The Engine Control Module (ECM) and the Transmission Control Module (TCM) are both examples of systems that the PCM monitors. Remarkably, the PCM also analyzes the data it collects. It uses that information to control the … Read more

5 Symptoms of a Bad ECU (and Replacement Cost)

bad ECU symptoms

The engine control unit (ECU), also referred to as the engine control module (ECM), is an electronic module that controls the function of the engine. This is done through a series of electronic components and sensors which compute data back to the engine. Based on what this data indicates, the engine will perform a specific … Read more