Parts for your 2007 Nissan Maxima-Camshaft sensor

2007 Nissan Maxima Camshaft Sensor — What It Does and When to Replace It

For the 2007 Nissan Maxima (VQ35DE 3.5L V6), a camshaft position sensor is absolutely fitted and relevant. In fact, this model uses two camshaft position sensors (one per bank). Technical confirmation appears in the Nissan 2007 Maxima Factory Service Manual (Engine Control – “Camshaft Position Sensor [PHASE]”), common OBD-II diagnostics lists for this model (codes P0340/P0345), and mainstream parts catalogues that list two CMP sensors for the VQ35DE. These sources collectively verify the component’s presence and role in engine management.

On this Maxima, the camshaft sensor feeds precise cam timing data to the ECM so it knows exactly which cylinder is on its compression stroke. That lets the car run proper sequential fuel injection, deliver crisp spark timing, and control the variable valve timing (CVTC) smoothly. If the signal goes missing or messy, the engine can be hard to start, run rough, or fall back to a dull, fuel-hungry failsafe strategy.

It’s not a scheduled maintenance item, but it does benefit from good engine oil habits. Clean oil helps keep the sensor’s magnetic pickup and the timing area free of sludge. Typical warning signs include:

• Long crank or random stalling once warm
• Flat spots on acceleration, rough idle, or poor economy
• Check Engine Light with codes like P0340 or P0345

Replacement on the 2007 Maxima is straightforward for a trained tech. The sensors sit at the rear of each cylinder head, near the firewall. Usual steps are:

• Switch off, let the engine cool, and disconnect the battery
• Unclip the connector, remove the single 10 mm retaining bolt
• Twist the sensor free, replace the O-ring, lightly oil it
• Install and torque the bolt to about 8 N·m, reconnect, clear codes, and road-test

Quality matters here. Genuine or top-tier aftermarket sensors for the VQ35DE tend to give the best signal quality and durability. Many workshops replace both bank sensors together if one has failed, as they often age at a similar rate. After fitting, the ECM will relearn on its own in normal driving. As a quick tip under the bonnet: check the harness for brittle insulation or oil wicking into the plug, as that can mimic a bad sensor.

Where is the camshaft sensor on a 2007 Maxima?

This Maxima has two. Each sits at the back of a cylinder head near the firewall, held by a single small bolt with an O-ring seal. Access is typically from above under the bonnet, the rear bank can be tight but is doable with basic hand tools.

What fault codes point to a bad camshaft sensor?

The most common are P0340 (Bank 1) and P0345 (Bank 2). Intermittent variants may also appear. It’s wise to check the wiring, connectors, and engine oil condition before calling the sensor itself.

Should both camshaft sensors be replaced at the same time?

Not mandatory, but many workshops recommend it on high‑kilometre cars. If one has failed and both are original, replacing the pair can prevent a second visit and keeps cam signal quality consistent across banks.