2025年2月15日 · Can someone help me diagnose trouble code CD9001 LIN, communication (coolant pump in low-temperature coolant circuit): Missing. I have a '21 M340x drive MH. I think I might have a broken wire. Any help would be appreciated (i.e., location of pump, diagnostic trouble tree, wiring diagrams, etc.).

using Autell trying to activate the pump but keeps fails. not sure what's the next step. Put a scope on the LIN wire with car running and everything connected and post it here. Should be 0-12 v square wave. No way to help until we can have a look at that signal.

2019年4月13日 · What are the symptoms of a charge/intercooler aux coolant pump failure? Will the intercoolers be hot? There will be a message on the idrive. Forgot what it says but something along the lines of engine is hot drive moderate. It will …

2020年8月20日 · Got a call this morning from my wife that the car was overheated and wouldn't go above 20mph. I drove over and pulled codes with Bimmerlink. The only code showing was really strange. 20A909 BSD, Communication (Engine coolant pump): missing. Opened the hood and all the coolant lines looked good, no coolant anywhere.

2021年5月17日 · Got it home and plugged it in to ISTA and saw 2 faults related to the Auxiliary water pump for charge cooler. I don't want to take it to BMW or they'll update the car and I'll …

Anyone ever see this code? Is my pump failing or some sort of electrical issue? My Yahoo! All times are GMT -5. The time now is 07:41 PM.

2020年2月19日 · As the impellers of the pump would restrict the coolant flow, and I doubt BMW had that in mind. So I assume this electric pump works all the time, just is is stopped 30 min later after the engine is stopped.

2020年8月9日 · Hooked up ProTool and have the following trouble codes and Drive Train Malfunction on the I-Drive display. Pro Tool will not clear the codes. Cheked fuses relays seem to be picking up about to start bugging the load-shedding relay for ignition and injection control. Maybe bad DME? Any help would be greatly appreciated!

The fault is for the coolant pump LIN message missing. The OBD fault number is U019F, the BMW number is CD9010. The coolant has been replaced with a Pierburg new pump (fault was present before coolant pump was replaced).

2023年12月14日 · After getting my DME bench unlocked, I installed the ECU back in thinking that I'll be able to run JB4 still. I reconnected my battery, saw a "Drivetrain failure" error, and couldn't start the car. So... might as well install Bootmod3 now to clear whatever codes there were and run the tunes I wanted, right?