what is code p0056 on a 2007 pontic g6gt 3.9

Question

what is p0056 means it said ho2s heater control circuit bank 2 sensor 2 what does all that means

Answer 1

Hi there,

The code means there is a problem with the heater circuit on the O2 sensor. The sensor uses a heater to get up to temp faster for better operation. Usually replacing the sensor will resolve the issue. This particular sensor, bank 2 sensor 2 is the one after the catalytic converter coming off the back of the engine nearest the firewall.