P0155 P0055 Woes
I replaced the O2 sensor (Bosch) where the code was being thrown, but the CEL never went away. About two weeks ago, my e63 went into limp mode and threw misfire codes for 306,307,308. I replaced all the ignition coils and replaced spark plugs as well.
I haven’t had any misfires since, but I noticed a rough idle and read the codes and a P0155 has now popped up alongside the P0055.
I believe both these codes are for faulty heater circuits in bank 1 and 2?


