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.
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HOMESERVICE MANUALSNISSAN-DATSUN2003FRONTIER BASE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SELF-DIAGNOSTICSDIAGNOSTIC TESTSDTC P0442: EVAP CONTROL SYSTEM - SMALL LEAK DETECTEDDTC CONFIRMATION TEST (USING GENERIC SCAN TOOL)
2003 Nissan-Datsun Frontier Base, Standard
DTC Confirmation Test (Using Generic Scan Tool)
2003 Nissan-Datsun Frontier Base, StandardSECTION DTC Confirmation Test (Using Generic Scan Tool)
NOTE:
Before performing test, ensure fuel tank level is 1/4-3/4, ambient temperature is 32-86°F (0-32°C) and EVAP-CPVCSV hoses are installed correctly.
- Start engine. Drive vehicle according to specified driving pattern to set System Readiness Test (SRT) codes. See SYSTEM READINESS TEST under SELF-DIAGNOSTIC SYSTEM. Stop vehicle and go to next step.
- Select MODE 1 on scan tool and check SRT status of EVAP system. If EVAP system SRT is complete, system is okay at this time. If EVAP system SRT is incomplete, turn ignition off, wait at least 10 seconds and go to next step.
- Perform driving pattern again. Select MODE 3 on scan tool. If DTC P0442 is set, go to DIAGNOSTIC PROCEDURE . If DTC P0441 is set, go to DIAGNOSTIC PROCEDURE under DTC P0441: EVAP CONTROL SYSTEM. If DTC P0441 or P0442 is not set, go to next step.
- Select MODE 1 with scan tool. If EVAP system SRT is complete, system is okay at this time. If EVAP system SRT is not complete, go to step 3 .
NOTE:
It is not necessary to allow engine to cool before repeating SRT.
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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.