2007 NISSAN Sentra QR25DE/QG18DE (B15)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing chain noise on early QR25DE
• Suspension wear on high mileage examples

First checks

• Inspect timing components on QR25DE
• Check CVT fluid if equipped
• Common sensor failures (MAF, throttle position)

Vor dem Teiletausch

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• Exact engine and transmission options vary by country and trim level.
• The 2007 Sentra is part of Nissan's B15 generation produced from 2000-2006/7 in most markets, with some overlap into early 2007 for certain regions.