Toyota Matrix 2006 with P0171 System too lean

06年的，跑了97,000 km 的車, check engine light popped on. The Diagnostic Trouble Codes (DTCs) were P0171, system too lean, bank 1.

此症病因甚多，先從簡單的入手，清洗了Mass Air Flow Sensor, 更換了spark plugs, 不果。

進一步在網上查到 “a Toyota Technical Bulletin (TSB) issued in 2007 was found.  The TSB pointed out that some 2003-2008 model year Corolla and Matrix vehicles equipped with a 1ZZ-FE engine may exhibit the problem as the result of a vacuum leak at the intake manifold.”

估計問題就在這裏。新密封圈稅後10元，具體更換步驟該TSB中有附。 

Photo of the intake manifold with aged gasket

 

 

所有跟帖： 

• 才97,000 km，6萬麥就出這問題？ -soccer88- ♂ (0 bytes) () 10/29/2014 postreply 16:55:33

• 看看pcv hoses有沒有漏，就這麽些買intake manifold不應該出問題 -soccer88- ♂ (0 bytes) () 10/29/2014 postreply 17:00:26

• 把MAF清洗一下看。方法見首頁置頂文章。 -加國五台山- ♂ (0 bytes) () 10/31/2014 postreply 14:45:43