i have codes "banks to rich" both sides, any help appreciated. 2006 S-type.

Question

P0172code ,P0175code bank 1&2 to rich

Answer 1

Hi there

Many times when it's affecting both banks of the engine it's traced back to the mass air flow sensor. If it's reading wrong, the computer can dump to much fuel into the mixture. Then the O2 sensors report the system is to rich. Sometimes you can get this with a dirty or plugged up air filter as well.