P0174System Too Lean (Bank 2)

The computer detected that the air-fuel mixture on bank 2 (the engine side without cylinder #1) has too much air or too little fuel. The system tried to add fuel to compensate but reached its limit. A lean condition usually points to extra unmetered air entering the engine or a shortage of fuel.

Ամենատարածված պատճառներն են՝ Vacuum or intake manifold leak, Failing or contaminated MAF sensor, Weak fuel pump or low fuel pressure, Clogged fuel filter or dirty fuel injectors, Leaking intake gasket or cracked intake boot, Faulty or leaking PCV system, Exhaust leak ahead of the upstream oxygen sensor։

Սովորաբար անվտանգ է կարճ տարածությունների վրա վարել, սակայն շուտով ստուգել տվեք։

Inspect for vacuum leaks first, as that is the most common cause, then check the MAF sensor and fuel pressure. Smoke testing the intake is an effective way to find air leaks. Driving is generally okay short term, but a persistent lean condition can damage the catalytic converter, so address it promptly.