This particular error code denotes a lean running condition. That is, the engine either has too little fuel or too much air entering it. It's actually quite common on ...
My 2013 Holden Cruze has a 171 code (running too lean) I replaced the PCV and the purge valve and it’s still running lean. I replaced both because the purge valve was stuck open and the PCV was ...
If your car has a PCV valve, and if your engine has been idling roughly or a malfunction indicator light goes on, check the valve. Car manufacturers suggest that PCV valves be cleaned or replaced ...