| Random DTC41 Tip |
Subject: Random DTC41 Tip by hcbph on 2020/6/25 3:17:34 Thought I'd pass along a tip for anyone with a L98 engine that gets a DTC41 error code from an intermittent SES light. Scenario is I started getting a SES light intermittently, it would come and go when driving or on startup. Typically if you disconnect the battery cable and hook it back up it would clear up the SES light. At no time did I have issues running the car but it didn't give me a warm and fuzzy when it happened. You won't always capture the error code but on occasion I would get the DTC41 error code. I reviewed my notes on past issues on the car and had it happen 5 years ago (which I'd forgotten for the moment). I did the same fix and it seems to have solved it again. The fix is to disconnect all the ground contacts from the G104 ground on the engine block by the oil filter. Clean everything up, use dialectic grease on the connectors and put it back together. So far it looks to have taken care of it again. The error code indicates a ECU failure, but the fact it's not continuous lead me to believe it was something else, a bad ground connection in this case. The error code sucks as they don't describe the problem very well, hope this helps someone down the road. |
