An important part of staying safe on the road is ensuring that your ride is in good condition. This not only keeps your rig safe, but you safe, too, ensuring that you make it back home to your loved ones safely. Check engine codes aren’t only the domain of your truck and trailer repair company in Beaver Dam, KY. Knowing what they mean can help you assess the urgency of your situation when they come up.

P0171 – System Too Lean

This code means the engine is receiving too much air and not enough fuel. It could be a vacuum leak, dirty mass airflow sensor or faulty oxygen sensor.

P0300 – Random/Multiple Cylinder Misfire Detected

This code points to inconsistent firing in one or more engine cylinders. Possible causes include worn spark plugs, ignition coil issues or a fuel system problem. Misfires can lead to rough idling and poor acceleration.

P0420 – Catalyst System Efficiency Below Threshold

This code typically relates to a failing catalytic converter or an issue with the oxygen sensors. You don’t have to stop driving, but it can affect emissions and fuel economy.

P0401 – Exhaust Gas Recirculation Flow Insufficient

The EGR system reduces emissions by recirculating exhaust gases. If flow’s restricted or the valve malfunctions, your truck may experience reduced engine efficiency or increased NOx emissions.

P0113 – Intake Air Temperature Sensor Circuit High Input

This code indicates that the intake air temperature sensor is reading too high. It could be caused by a disconnected sensor or damaged wiring, affecting how the engine manages fuel and air.

Get to your destination safely by arming yourself with as much information about your rig as possible, including these common check engine code meanings. And for 24/7 roadside assistance in Beaver Dam, KY and surrounding areas, contact us anytime.