The Diagnostic Adventure Uncovering Engine Code P0171

P0171 means bank 1 is lean and is near the limits of what the PCM can adapt to. This code and its sister, P0174(Bank 2) are common sights on ... Engine code p0171 = System too Lean (Bank 1) · The MAF (Mass Air Flow) Sensor is dirty or faulty. There is an issue with some Vehicles where the ... code issue is lean condition bank 1 I replaced PCV valve and hose. I cleaned MAP sensor. I installed a hose clamp on passenger side vacuum ... The P0171 code means your engine is running lean, with too much air and not enough fuel. Common causes include vacuum leaks, ... A quick search says possible causes dirty air filter, intake leak, mass airflow sensor, or oxygen sensor, among other things. The check engine code was P0171, a lean fuel trim. He cleared the code and checked for air leaks and said the car needed a new PCV valve and he installed one. What is the cost to resolve a P0171 code? ... This code will require a diagnostic check, which will run about $100 depending on the time it takes to find the ... Based on the information you provided, it seems like your vehicle is displaying a P0171 error code, which typically indicates a problem with the ... For example, code P0170 could mean the right cyl. bank could be running either lean or rich and the same for code P0173. They want you to read ... Your Oxygen sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module ( ...