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.
2012 Suzuki SX4 BaseFACTORY OEM SERVICE PROCEDURE
Immobilizer Control System DTCS
IMMOBILIZER CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P1614 | Transponder response error |
| P1615 | Steering lock unit communication error |
| P1616 | Unregistered keyless start control module |
| P1618 | Keyless start control module CAN communication error |
| P1621 | Immobilizer communication line error |
| P1622 | EEPROM reading/writing error |
| P1623 | Unregistered transponder |
| P1625 | Immobilizer antenna error |
| P1636 | Immobilizer information registration failure |
| P1638 | Immobilizer information mismatched |
| P1645 | ID code communication error |
| P1646 | ID code incorrectness |
Factory Service Tools
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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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