Overview
The 2015 Infiniti Q50 is powered by a 3.7L V6 engine, with a 7-speed automatic transmission, and features Nissan’s FM platform, a front mid-ship design that moves the engine as far back to the firewall as possible.
VQ3ZVHR Engine
The engine employs Variable Valve Event and Lift (VVEL) technology, which precisely controls valve event timing and duration. It also features dual throttle bodies and Mass Air Flow (MAF) sensors.
Troubleshooting a Timing Problem
A 2015 Infiniti Q50 with a 3.7L engine was experiencing a timing problem, with the Check Engine light on and the engine running rough and low on power. The issue was diagnosed using a full system code scan, which revealed a POOII fault code for the intake camshaft position for Bank 1.
The diagnosis involved checking the oil level, performing a road test, and using a lab scope to verify the engine position sensors. The issue was ultimately traced back to the signal target wheel, which was found to be out of time.
Manual:
Download: 2015 Infiniti Q50 Service Manual
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