Over the past several decades, great strides have been made in the area of vehicle smog reduction. The bulk of these improvements came in direct response to various EPA mandates that were passed down during the 1970s and 80s. Automakers are now restricted from selling vehicles that are not compliant with these mandates.<\/p>\n
The need to meet such obligations has led to the development of numerous smog control devices. Each of these devices plays a prominent role in reducing a vehicle\u2019s noxious exhaust output when all operate as intended. However, these devices are also prone to occasional failure, as they begin to age and wear. <\/p>\n
The failure of various smog control devices often causes a vehicle\u2019s PCM to log one or more fault codes, which in turn leads to the illumination of a check engine light, One of the industry\u2019s most common emissions-related fault codes is DTC P0411, which is indicative of an issue within a vehicle\u2019s secondary air injection circuit. <\/p>\n
Read on to learn more about diagnostic fault code P0411, as well as how to handle such an issue, should it arise in the future.<\/p>\n