Engine control modules (PCM/ECM/ECUs) rely on oxygen sensors for adjusting engine performance and controlling emission levels. The PCM will display fault code P0140 if the oxygen sensor downstream from the catalytic convert (Sensor 2). This is a weak or non-functioning ...
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P0411 Secondary Air Injection System Incorrect Flow Detected Fault: What is it?

The secondary air system lowers emissions by providing fresh air to exhaust systems. The older vehicles have a belt driven air pump while the newer models use an electric pump. The system is used to quickly heat up the catalytic ...
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control Fault: What is it?
The engine temperature must be reached within a specified time after starting the vehicle. Engine control units (ECU/PCM/ECM), have a preset value. Engine temperature is crucial for overall vehicle performance. Fuel vaporization is efficient when the temperature of the fuel ...
P0316 Engine Misfire was Detected During the First 1,000 Revolutions Upon Startup Fault: What is it?
The PCM may disable a misfiring cylinder to prevent further engine damage. The P0316 fault code is often recorded along with one or more P0300-series codes that are associated with the misfiring(s).Other fault codes that are related to P0316 include: ...
P0562 System Voltage Low Fault: What is it?
The power control module is designed to alert you when there is an issue with your vehicle. It will display a fault code if it detects an issue. This helps you to diagnose the problem and fix it. The PCM ...
