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.
DTC Detection Logic
- If DTC P1650 is displayed with DTC U1001, perform the trouble diagnosis for DTC U1001. Refer to "DTC LOGIC ".
- If DTC P1650 is displayed with DTC P0607, perform the trouble diagnosis for DTC P0607. Refer to "DTC LOGIC ".
- If DTC P1650 is displayed with B209F or B20A0 of IPDM E/R, perform the trouble diagnosis for B209F or B20A0. Refer to "DTC LOGIC " or "DTC LOGIC ".
- If DTC P1650 is displayed with B26F9 or B26FA of BCM, perform the trouble diagnosis for B209F or B20A0. Refer to "DTC LOGIC " or "DTC LOGIC ".
| DTC No. | Trouble diagnosis name (Trouble diagnosis content) | DTC detecting condition | Possible cause | |
|---|---|---|---|---|
| P1650 | STR MTR RELAY 2 (Starter relay circuit) | A | Starter relay is stuck ON. |
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| B | Starter relay power supply circuit is excessively high voltage. |
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| C | Starter relay circuit is excessively low voltage |
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NO RELATED
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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.