Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Stop/Start System
| DTC No. | Detected items | Stop/Start System Operating Condition In Fail Safe Mode | ||
|---|---|---|---|---|
| Idling Or Driving The Vehicle | Stop/Start System Operating | |||
| Stop | During Cranking (Restart) |
|||
| B1910 B1911 |
Sub-Battery Relay | Prohibit the stop/start system operation | - | Prohibit the stop/start system operation from the next time |
| P0120 | Sensor power supply | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| P0605 | EMCM | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| P0607 | - | |||
| P0643 | Sensor power supply | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| P1540 P1543 P1544 |
Sub-Battery current sensor | Prohibit the stop/start system operation | - | Prohibit the stop/start system operation from the next time |
| P1541 P1542 |
Restart the engine | |||
| P1546 P1547 |
Sub-Battery temperature sensor | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| P1550 P1553 P1554 |
Main battery current sensor | Prohibit the stop/start system operation | - | Prohibit the stop/start system operation from the next time |
| P1551 P1552 |
Restart the engine | |||
| P1556 P1557 |
Main battery temperature sensor | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| P1575 | Brake Switch | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| P1576 P1577 |
Brake pedal position Switch | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| P1655 | Engine restart bypass Relay | Prohibit the stop/start system operation | Prohibit the stop/start system operation | Prohibit the stop/start system operation from the next time |
| P1656 | Engine restart bypass Relay | Prohibit the stop/start system operation | Prohibit the stop/start system operation | Prohibit the stop/start system operation from the next time |
| P1805 | Brake Switch | Prohibit the stop/start system operation | Restart the engine | Prohibit the stop/start system operation from the next time |
| U1000 | CAN communication line | Prohibit the stop/start system operation | Restart the engine
NOTE:
Does not start the engine by the CAN communication abnormal status |
Prohibit the stop/start system operation from the next time |
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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