P0171 Code Toyota Sienna at Alpha Blog

P0171 Code Toyota Sienna. When this code pops up, it indicates that the engine is running too lean or with an air/fuel mixture that contains too much air and not enough. If valve diagnoses/tested faulty then replacing. Leaky purge valve can cause a vacuum leak such that both banks set lean error codes. Of course, this code can also signify a bad o2 sensor in bank 1. Specifically, these codes reflect conditions where the mixture is too lean (p0171) or too rich (p0172).

She drives home, and the next day the ce light comes on. Oftentimes, a p0171 means that your toyota is having trouble with a dirty or faulty mass airflow (maf) sensor, or a vacuum leak downstream of the maf sensor (perhaps in the pcv line or in the valve itself). When this code pops up, it indicates that the engine is running too lean or with an air/fuel mixture that contains too much air and not enough. Of course, this code can also signify a bad o2 sensor in bank 1. Turns out, it is p0171, and p0174. If valve diagnoses/tested faulty then replacing. Leaky purge valve can cause a vacuum leak such that both banks set lean error codes.

Obd Code P0171 Toyota

Of course, this code can also signify a bad o2 sensor in bank 1. P0171 Code Toyota Sienna Of course, this code can also signify a bad o2 sensor in bank 1. Oftentimes, a p0171 means that your toyota is having trouble with a dirty or faulty mass airflow (maf) sensor, or a vacuum leak downstream of the maf sensor (perhaps in the pcv line or in the valve itself). Turns out, it is p0171, and p0174. Specifically, these codes reflect conditions where the mixture is too lean (p0171) or too rich (p0172). If valve diagnoses/tested faulty then replacing.