Most Infiniti G35 models have two camshaft position sensors, one for each cylinder bank.
For U.S. Infiniti G35 owners, one of the most common engine diagnostic questions is how many camshaft sensors does a G35 have. The answer depends slightly on the model year and engine version, but most G35 vehicles use two camshaft position sensors along with a separate crankshaft position sensor.
Understanding the number and location of these sensors can save time when diagnosing a check engine light, rough running, hard starting, or stalling issues. Knowing which sensor has failed also helps avoid replacing parts unnecessarily.
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How Many Camshaft Sensors Does a G35 Have?
Most Infiniti G35 vehicles equipped with the VQ35 engine have two camshaft position sensors. One sensor is mounted on Bank 1 and the other on Bank 2 of the engine.
These sensors work with the crankshaft position sensor to help the engine control module determine valve timing, fuel injection timing, and ignition timing. When either sensor fails, engine performance can be affected.
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Typical Sensor Count
Two camshaft position sensors and one crankshaft position sensor.
Purpose
Provides camshaft position data to the engine computer.
Why There Are Two Sensors
The V6 engine uses two cylinder banks. Each bank has its own camshaft position sensor so the engine computer can accurately monitor timing events on both sides of the engine.
Bank 1
Monitors one side of the V6 engine.
Bank 2
Monitors the opposite side of the V6 engine.
Where Are the Camshaft Sensors Located?
The camshaft position sensors are generally located near the rear portion of the cylinder heads. Their exact location varies slightly by model year.
Access can be tight, especially on one side of the engine bay. Many owners remove intake components or work from above the engine to reach the sensors.
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Bank 1 Sensor
Mounted on one cylinder head near the camshaft area.
Bank 2 Sensor
Mounted on the opposite cylinder head.
Visual Identification
Each sensor has an electrical connector and is secured with a retaining bolt. Always disconnect the battery before working on engine electrical components.
Connector
Electrical plug sends data to the engine computer.
Symptoms of a Bad G35 Camshaft Position Sensor
A failing camshaft position sensor can cause several drivability issues. The engine computer relies on accurate timing data, so even intermittent sensor failures can create noticeable problems.
Symptoms may appear gradually or suddenly depending on the condition of the sensor and wiring.
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Check Engine Light
Diagnostic trouble codes commonly appear when a sensor fails.
Hard Starting
The engine may crank longer before starting.
Stalling
The vehicle may stall unexpectedly while driving.
Common Trouble Codes
Codes related to camshaft position sensor circuits often point to a failed sensor, damaged wiring, or connector issues.
Diagnosis
Use a scan tool before replacing parts.
How to Diagnose a Camshaft Sensor Problem
Start by scanning the vehicle for trouble codes. A code reader can help identify whether the issue involves Bank 1, Bank 2, or another related component.
Inspect the sensor connector, wiring, and mounting area before purchasing replacement parts. Corrosion and damaged wiring can mimic sensor failure.
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Scan Codes
Identify the affected bank and circuit.
Inspect Wiring
Check for broken, loose, or corroded connections.
Test Components
Verify sensor operation if proper equipment is available.
When Diagnosis Fails
If symptoms remain after replacing a sensor, inspect the crankshaft position sensor and engine wiring harness.
Next Step
Perform a complete electrical inspection.
Replacement Tips and Common Mistakes
Replacing a camshaft position sensor is usually a straightforward repair. However, using low-quality parts or misdiagnosing the problem can lead to repeated failures.
Always verify the correct sensor location before replacement because bank-specific trouble codes can point to different sides of the engine.
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Use Quality Parts
Reliable sensors typically provide better long-term performance.
Clear Codes
Reset stored trouble codes after repairs.
Road Test
Confirm the repair solved the issue.
Signs of a Successful Repair
The engine should start normally, idle smoothly, and operate without recurring fault codes.
Verification
No new check engine light after driving.
Frequently Asked Questions
Q
Does every Infiniti G35 have two camshaft sensors?
Most G35 models equipped with the VQ35 V6 engine use two camshaft position sensors. Always verify your specific model year and engine configuration.
Q
Is the crankshaft sensor the same as a camshaft sensor?
No. The crankshaft position sensor and camshaft position sensors perform different functions, although they work together for engine timing calculations.
Q
Can I drive with a bad camshaft position sensor?
The vehicle may still run, but drivability problems can worsen. Stalling, poor performance, and starting issues are possible.
Q
How long do G35 camshaft sensors last?
Service life varies by driving conditions, heat exposure, and part quality. Many sensors last for years before showing symptoms.
Q
Should both camshaft sensors be replaced together?
Some owners replace both sensors at the same time due to age. However, replacement of only the failed sensor is often sufficient if the other sensor is operating correctly.
✦ Wrapping Up
Conclusion
The answer to how many camshaft sensors does a G35 have is usually two. These sensors monitor camshaft position on each cylinder bank and provide critical timing information to the engine computer.
If your G35 develops starting problems, stalling, or a check engine light, checking the camshaft position sensors should be part of the diagnostic process.
💡 Key Takeaway
Verify trouble codes first, identify the affected bank, and inspect the sensor, connector, and wiring before replacing parts.
Ethan Brooks is an automotive writer at Auto News 7, covering car news, vehicle maintenance, new model updates, recalls, and practical buying guides. He focuses on clear, useful information that helps drivers understand their vehicles and make better ownership decisions.
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