Hey all,

My E350 has been lighting the CEL intermittently. It will sometimes stay on for 2 or 3 days and then go out for 1 to 2 days and then come on again. My OBD scan tool shows a stored code of P2570 as well as a pending code of P2570. This code translates to "Direct Ozone Reduction Catalyst Temperature Sensor Circuit High".

Can anyone tell me what this actually means, what components might be involved and how to fix it?

Thanks,

__________________
Gary

1992 300E, 2006 E350 and 2006 C230 Sport