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.
2011 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
Engine Control System (Qr25DE)
ENGINE CONTROL SYSTEM (QR25DE) DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description |
|---|---|
| U0101-U1001 | LOST COMM |
| P0011-P0075 | INT/V TIM CONT-B1 |
| P0101-P0128 | MAF SEN/CIRCUIT-B1 |
| P0130-P0159 | A/F SENSOR1 (B1) |
| P0171-P0223 | FUEL SYS |
| P0300-P0430 | CYL MISFIRE |
| P0441-P0463 | EVAP PURG FLOW/MON |
| P0500-P0643 | VEH SPEED SEN/CIRC |
| P0705-P0850 | SENSOR A |
| P1148-P1574 | CLOSED LOOP |
| P1610-P1615 | IMM-ECM |
| P1715-P1805 | SOLENOID |
| P2100-P2A03 | ETC MOT PWR |
Factory Service Tools
Use the Manual With the Right Hardware
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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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