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 communications
8Original wording in English
MAZDA
Reported code forms U0401:68
Some customers may experience an instrument cluster warning message "Safety and Driver Support Systems Partially Disabled" and DTC U0401:68 [VEHICLE CONTROL MODULE (US)] (Error signal received from PCM, DSC HU/CM,…
MAZDA
Reported code forms U0401:68
INSTRUMENT CLUSTER WARNING MESSAGE "SAFETY AND DRIVER SUPPORT SYSTEMS PARTIALLY DISABLED" AND DTC U0401:68 IS STORED:Some customers may experience an instrument cluster warning message "Safety and Driver Support Systems…
MAZDA
Reported code forms U0401
SOME VEHICLES MAY EXPERIENCE THE MIL ON WITH DTC P0780 (GEAR SHIFTING MALFUNCTION) AND/OR P1738 (AUTO-MATIC TRANSAXLE INTERNAL MALFUNCTION) WITH/WITHOUT U0401, OR OTHER DTCS STORED IN MEMORY.OTHER DTCS (WITH THE ABOVE…
MAZDA
Reported code forms U0401
SOME VEHICLES MAY EXPERIENCE THE MIL ON WITH DTC P0780 (GEAR SHIFTING MALFUNCTION) AND/OR P1738 (AUTOMATIC TRANSAXLE INTERNAL MALFUNCTION) WITH/WITHOUT U0401, OR OTHER DTCS STORED IN MEMORY. OTHER DTCS (WITH THE ABOVE…
MAZDA
Reported code forms U0401
SOME VEHICLES MAY EXPERIENCE THE MIL ON WITH DTC P0780 (GEAR SHIFTING MALFUNCTION) AND/OR P1738 (AUTO-MATIC TRANSAXLE INTERNAL MALFUNCTION) WITH/WITHOUT U0401, OR OTHER DTCS STORED IN MEMORY.OTHER DTCS (WITH THE ABOVE…
MAZDA
Reported code forms U0401
SOME VEHICLES MAY EXPERIENCE THE MIL ON WITH DTC P0780 (GEAR SHIFTING MALFUNCTION) AND/OR P1738 (AUTO-MATIC TRANSAXLE INTERNAL MALFUNCTION) WITH/WITHOUT U0401, OR OTHER DTCS STORED IN MEMORY.OTHER DTCS (WITH THE ABOVE…
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.