U0001
5 owner reports and 6 manufacturer filings across 8 model years from Chrysler, Jeep, Kia, Ram.
Where U0001 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2017 Jeep Renegade | Electrical System | 1 | 1 | Battery → |
| 2016 Jeep Renegade | Electrical System | 2 | — | Battery → |
| 2023 Ram 1500 | Steering | 2 | — | |
| 2016 Chrysler 200 | Air Bags | — | 1 | |
| 2019 Chrysler Pacifica | Power Train | — | 1 | |
| 2017 Jeep Cherokee | Power Train | — | 1 | |
| 2025 Kia Sportage | Electrical System | — | 1 | Battery → |
| 2024 Ram 1500 | Steering | 1 | — |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
The vehicle returned to Pep Boys, where DTCs U0001 (CAN C Bus) and U0401 (Implausible Data Received From ECM/PCM) were documented
I had the code read and it was a generic U0001 CAM error (Controller Area Module)
Vehicle was put in park, then back in drive and a check engine light came on, the check engine light code was U0001 for a can c bus
6 manufacturer filings name U0001. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names U0001.
- 9100194 Service bulletin2023-07-24 · Steering
- EPS Steering Gear Prior to replacing EPS gear for Can C Bus Diagnostic Trouble Codes (DTCs), U0001 & U0002, please contact FCA Redacted Content. Please have the following info available: VIN, vehicle complaint, diagnostics completed, first name and last name, Dealer code, Service Manager name, Phone number or email address. If no response received in 15 minutes, proceed with part repair.
- S2308000042 Service bulletin2023-07-18 · Equipment — Electrical
- EPS And Other CAN C Modules Offline, U0001 And U0002 Can C Bus Diagnostic Trouble Codes (DTCs)
- 21-043-17 Service bulletin2017-09-22 · Electrical System — Software
- Flash: Transmission Diagnostic and Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one of the following Diagnostic Trouble Codes (DTCs) have been set:U1412 - Implausible Vehicle Speed S
- 21-011-17 Service bulletin2017-03-18 · Electrical System
- Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): U1412-00 - Implausible Veh
- 21-011-17 Service bulletin2017-03-18 · Electrical System
- Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): U1412-00 - Implausible Veh
What U0001 means
Source: SAE J2012 / OBD-IIU0001 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about U0001
Source: NHTSA files and the OBD-II standardCan I keep driving with U0001 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.