Category Archives: OBD OBDII Error Codes

OBD OBDII Error Codes

How To Fix a P0171 OBDII Error Code

System Too Lean (Bank 1)   Below is the basic causes and common fixes for a P0171 OBDII error code. What Is a P0171 Error Code? A P0171 code indicates there is a fuel/air mixture problem on bank 1 of the engine. The term Lean means the cylinder is receiving too much or too little air creating a… Read More »

How To Fix Honda Engine Error Code P3400

A video is at the bottom of the page for a visual walk-through id needed. A Honda with a Error CodeP3400 is a Cylinder Deactivation System Bank 1. Possible Causes Engine Error Code P3400 Defective cylinder deactivation solenoid An open or short in the cylinder deactivation solenoid harness A bad electrical connection in the cylinder deactivation solenoid circuit… Read More »