5 Symptoms of a Bad PCM (and Replacement Cost)
The Powertrain Control Module (PCM) is a sophisticated component that receives data from a range of sensors. You can think of it as the primary brain of a vehicle. If…
ECM
$7E8 and $7E9 Engine Codes (What Do They Mean?)
Learning to correctly use an OBD II scanner takes time and experience. What appear to be codes $7E8 and $7E9 on scanners are actually not diagnostic fault codes but data…
U0100 Code (Symptoms, Causes, and How to Fix)
That dreaded check engine light often signals an underlying problem. But code U0100 indicates an even more serious issue – a communication breakdown between critical systems. This means your vehicle’s…
U1000 Code (Symptoms, Causes, and How to Fix)
Seeing an obscure trouble code like U1000 can be puzzling for drivers. This manufacturer-specific code applies to certain makes like Nissan, Infiniti, GM and Isuzu vehicles. But what does it…
P2509 Code (Symptoms, Causes, and How to Fix)
Few things can cause your heart to sink in your chest like a sudden check engine light on the dash. But once you get over the initial panic and get…
PCM vs ECM vs ECU vs TCM (What’s the Difference?)
The main difference between PCM, ECM/ECU, and TCM is their scope of control in a vehicle: PCM is the most comprehensive, controlling multiple systems; ECM/ECU focuses on engine management; and…
5 Symptoms of a Bad ECU (and Replacement Cost)
Is your check engine light constantly glowing? Do you experience poor performance, stalled acceleration, or decreased fuel efficiency? These seemingly disconnected issues may point to a deeper problem – a…
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