Quote:
Originally Posted by Letsgo
Quick update, I replaced the coolant temp sensor with an OEM BMW one ($50). Replaced it, cleared the codes and drove trouble free for the last 3 weeks (1,000km).
CEL came on again, same two codes:
OBD2 Codes:
U1408: (can't find definitive for what this is)
P0128: Coolant temp
Will delete again and report back.
If it comes back I guess the thermostat will be next?
FYI the engine oil temp gauge is functioning normal and I don't have the fan coming on excessively like it did originally.
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Looks like the CEL came back on after you replaced the coolant temp sensor. So did you clear the codes again and haven't had a CEL since?