Check engine light with P0171 & P0174 codes

[holmesie]

My 2008 Kluger (185,000km) has the check engine & VSC lights lit, and my scanguage reads two codes P0171 and P0174. Has anyone had this problem with their Kluger?

Google suggests the codes translate to lean mixture and could be several things including a vacuum leak or a crook o2 sensor.

Any help appreciated!

Thanks in advance

[trentmeyer23]

With those codes and those kilometres I would suggest it would be a faulty O2 sensor. Try and get your hands on a better code reader and you should have your answer.

[holmesie]

I popped the bonnet, only to find the lid of the airbox wasn't seated - seems the last time it was serviced a new filter was installed and the job not finished properly by the mechanic. Almost 8,000km of sucking in god-knows-what through a 5mm gap. I cleaned the intake tubing and airflow meter, reset the code and it seems to be OK after. However I will be watching the oil consumption closely, and having a chat with the mechanic

Edited November 3, 2014 by holmesie

[trentmeyer23]

It's pretty easy to do on those airboxes, especially in the rush of the service times placed on the mechanics(usually apprentices). Still, might be worth making the dealer aware of this.