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.
On Board Diagnosis Logic: Notes
2012 Nissan-Datsun Sentra SE-RSECTION Notes
These self-diagnoses have the one trip detection logic .
NOTE:
If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
DTC P0643 SENSOR POWER SUPPLY
.
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
|---|---|---|---|
| P0122 0122 |
Throttle position sensor 2 circuit low input | An excessively low voltage from the TP sensor 2 is sent to ECM. |
|
| P0123 0123 |
Throttle position sensor 2 circuit high input | An excessively high voltage from the TP sensor 2 is sent to ECM. |
RENDER: 1.0x
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.