p0137

Hi I have searched around a bit but could not find anyone with the same issue that i am having. I drive a 2005 Merc C230K sports coupe with not quite 40,000 miles on the clock. A few weeks back it put up a lot of codes, misfire, running rich/lean which were cleared and I didnt write...

Well after thinking the O2 sensor issues were sorted, the first time I drove it from cold the EML came back on, P0137. :wallbash: I have changed all the usual things, vac hose and check valve under the inlet manifold. ECU re-flashed. Even renewed the pipe and check valve that feeds the...

Quick recap: EML came on, Downstream O2 sensor fault, replaced. Failed MOT on emmissions, lambda low, running rich & stinking of ammonia from the exhaust. I have renewed the check valve and perished pipework under the inlet manifold, very cramped behind there but doable without removal of the...