The Engine Control Module (ECM/PCM/ECU), which controls your vehicle’s computer, detects an issue with its electric cooling fan. The PCM detects temperature changes via the coolant sensor. The PCM will activate the fan if the engine temperature reaches the specified ...
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P0355 Fault in the Ignition Coil “E” Primary/Secondary Circuit: What is it?
The majority of modern vehicles use a coil-on plug (COP) system. This eliminates the requirement for spark plugs, distributor caps and wires. The ignition coil in this system is located directly above the plug. Each cylinder has its own coil, ...
P0300 Random/Multiple Cylinder Misfire Detected Fault: What is it?
The P0300 code means that the computer of your vehicle has detected an ignition fault (misfire) in more than one engine cylinder. Other fault codes, from P0301 through P0308, will also likely occur. This code’s last number indicates the cylinders ...
P0430 Catalyst System Efficiency Below Threshold (Bank 2) Fault: What is it?
This code may appear alongside misfire codes and oxygen sensor codes. The ECU sets the P0430 code when it detects low catalytic conversion efficiency. The code may appear when the ECU detects a low catalytic efficiency. This can be due ...
U0100 Lost Communication with ECM/PCM Fault: What is it?
The fault code U0100 indicates a loss of signals between an Electronic Control Module (ECM/PCM), and another module. A short circuit may have also caused the communication to be interrupted. All systems of modern vehicles are controlled by computers. Engine ...