Mercury Sable P0688: Meaning, Causes, + Diagnosis

P0688 is a relatively rare OBD2 trouble code. It’s a generic code, meaning that it has the same definition for any vehicle made for the 1996 model year and up.  This includes the Mercury Sable. The most common causes of P0688 are a bad PCM power relay or a wiring issue between the PCM and … Read more

Mercury Villager P0688: Meaning, Causes, + Diagnosis

P0688 is a relatively rare OBD2 trouble code. It’s a generic code, meaning that it has the same definition for any vehicle made for the 1996 model year and up.  This includes the Mercury Villager. The most common causes of P0688 are a bad PCM power relay or a wiring issue between the PCM and … Read more

Pontiac Grand Am P0688: Meaning, Causes, + Diagnosis

P0688 is a relatively rare OBD2 trouble code. It’s a generic code, meaning that it has the same definition for any vehicle made for the 1996 model year and up.  This includes the Pontiac Grand Am. The most common causes of P0688 are a bad PCM power relay or a wiring issue between the PCM … Read more

Chevy Traverse P0688: Meaning, Causes, + Diagnosis

P0688 is a relatively rare OBD2 trouble code. It’s a generic code, meaning that it has the same definition for any vehicle made for the 1996 model year and up.  This includes the Chevy Traverse. The most common causes of P0688 are a bad PCM power relay or a wiring issue between the PCM and … Read more

Chevy Trailblazer P0688: Meaning, Causes, + Diagnosis

P0688 is a relatively rare OBD2 trouble code. It’s a generic code, meaning that it has the same definition for any vehicle made for the 1996 model year and up.  This includes the Chevy Trailblazer. The most common causes of P0688 are a bad PCM power relay or a wiring issue between the PCM and … Read more