What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
U0001Automatic Gearbox Shifter Module (AGSM) CAN Communication BUS (BUS Off)U0001-81TRANSMISSION CONTROL MODULE [TCM]Manufacturer communications
35Original wording in English
FORD
Reported code forms U0001:88
Some 2025 Maverick hybrid vehicles built on or before 17-Feb-2025 may exhibit diagnostic trouble code (DTC) U0001:88 stored in the air conditioning control module (ACCM). If no customers symptoms are present, download…
RAM
Reported code forms U0001-00
EPS And Other CAN C Modules Offline, U0001-00, U0002-00, and U0131-00 Can C Bus Diagnostic Trouble Codes (DTCs).
RAM
Reported code forms U0001
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,…
RAM
Reported code forms U0001
EPS And Other CAN C Modules Offline, U0001 And U0002 Can C Bus Diagnostic Trouble Codes (DTCs)
VOLVO
Reported code forms U000188
Volvo Chassis - Unable To Program VECU: Error Code 155; Possible EMS DTC U000188 CAN Communication Backbone 2 Net - VECU5 Only
RAM
Reported code forms U0001
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. There will be a choice between two calibrations. One for vehicles that utilize an ammonia…
Check vehicle applicability
257A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chrysler | 200 | 2015 |
| Fiat | 500X | 2017 |
| Ford | MAVERICK HYBRID | 2025 |
| Harley-Davidson | TOURING | 2017 |
| Jaguar | F-PACE | 2018 |
| Jaguar | F-PACE | 2017 |
| Jaguar | XE | 2018 |
| Jaguar | XE | 2017 |
| Jaguar | XF | 2018 |
| Jaguar | XF | 2017 |
| Jeep | CHEROKEE | 2015 |
| Jeep | RENEGADE | 2017 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.