1996 Cadillac DeVille P0171 and P0174

1996 Cadillac DeVille

Cadillac DeVille On the 1996 Cadillac DeVille, when P0171 and P0174 are set with oxygen sensor codes, more times than not, this is not an oxygen sensor problem. This means the air-fuel mixture is running “lean” and this is what sets the oxygen sensor code. It’s not very common for both upstream oxygen sensors to fail at the same time. So, before condemning the oxygen sensors – First- check the Fuel Filter. Remove the filter and try to blow through it. Any resistance and the Fuel Filter will need to…

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2005 Toyota Highlander V6 P0018

2005 Toyota Highlander

Toyota Highlander On the 2005 Toyota Highlander, the P0018 is pointing to “CRANKSHAFT POSITION – CAMSHAFT POSITION CORRELATION (BANK 2 SENSOR A)”. This can be the case of a timing belt that has jumped a tooth or has stretched. SO, first thing to check here is the timing belt. Inspect the timing belt and make sure the timing is still set correctly and the belt teeth are in good condition. Bring #1 piston to TDC and check alignment. If the belt is good and still in alignment, then the problem…

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2008 Chevy Malibu P0451 FTP Sensor

2008 Chevy Malibu

Chevy Malibu On the 2008 Chevy Malibu, the P0451 is a very straight forward code that points to a problem with the Fuel Tank Pressure Sensor. This sensor plays a major role in the EVAP (emissions control) System. So when faulty, it will throw off other parts/sensors in the system, which can produce a fuel smell. These are actually very common GM vehicle fail items. The FTP sensor is located at the top of the fuel tank, mounted to the top of the fuel pump assembly. To gain access, the…

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