U0073, U0100, and U0101 codes

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08-03-2014, 02:10 PM
feather12comp

U0073, U0100, and U0101 codes

I noticed the above codes after changing my throttle body. I reseated the connector, but no changes. Physical inspection of wiring does not reveal anything. Any suggestions on what to check?
U0101
- Faulty Transmission Control Module (TCM)
- TCM harness is open or shorted
- TCM circuit poor electrical connection
U0100
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection

U0073
Control Module Communication Bus OFF
08-03-2014, 11:19 PM
Scanman

I got a lot of similar codes when I cleaned mine. Check to make sure you didn't accidentally unplug fuel injector #1.
03-07-2019, 04:12 AM
MicHaveo

Did you ever resolve this issue?

Quote:

Originally Posted by feather12comp

I noticed the above codes after changing my throttle body. I reseated the connector, but no changes. Physical inspection of wiring does not reveal anything. Any suggestions on what to check?
U0101
- Faulty Transmission Control Module (TCM)
- TCM harness is open or shorted
- TCM circuit poor electrical connection
U0100
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection

U0073
Control Module Communication Bus OFF

I have the same issue, did you ever resolve this issue with your car? What did you do to fix these codes? Thanks for your time!
12-22-2019, 11:50 AM
KKway1

Quote:

Originally Posted by MicHaveo

I have the same issue, did you ever resolve this issue with your car? What did you do to fix these codes? Thanks for your time!

I just had the throttle body replaced and my car is throwing the same code, do you have a fix?