Fixing P0350 Camshaft Position Sensor Circuit Intermittent

Have you ever come across a P0350 code and wondered what it signifies?

Let’s delve into understanding what the P0350 code entails.

Understanding P0350 Code

The P0350 code is part of the On-Board Diagnostics-II (OBD-II) system and is typically associated with the performance of the camshaft position sensor in your vehicle.

The Importance of the Camshaft Position Sensor

Understanding the P0350 code necessitates an understanding of the crucial role the camshaft position sensor plays in the functioning of your car.

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Function of Camshaft Position Sensor

The camshaft position sensor is responsible for sending data about the camshaft speed to the vehicle’s electronic control module (ECM). This data is crucial in controlling the engine’s ignition timing.

The Role in Engine Performance

This sensor is vital for optimal engine performance. It aids in the precise control of fuel injection, which directly affects the engine’s power output and fuel efficiency.

What Does P0350 Code Mean?

The P0350 code is specific to the camshaft position sensor’s performance. But, what exactly does it denote?

Specifics of the P0350 Code

A P0350 code indicates an intermittent issue with the camshaft position sensor circuit. It is typically triggered when the ECM can’t receive data from the sensor due to some intermittent problem in the sensor or the circuit.

Symptoms of P0350 Code

How can you tell if your vehicle is struggling with a P0350 code issue? Here are some common symptoms to watch out for.

Engine Performance Issues

One of the first signs of a P0350 code is a drop in engine performance. This could manifest as rough idling, power loss, or even engine misfires.

Ignition Problems

You might experience trouble starting 

the vehicle, as the irregular sensor signal may affect the ignition timing.

Fuel Efficiency Decline

Inconsistent sensor readings could also lead to improper fuel injection timing, leading to decreased fuel efficiency.

Causes of P0350 Code

There could be several reasons behind the occurrence of the P0350 code.

Sensor Failure

The most common cause is the failure of the camshaft position sensor itself, which might be due to wear and tear or manufacturing defects.

Wiring Issues

Damaged wiring or connectors could also cause intermittent signals, resulting in the P0350 code.

ECM Problems

In rare cases, issues with the ECM could also trigger the P0350 code.

How to Diagnose P0350 Code

Once you have identified the symptoms, the next step is diagnosing the problem.

Preliminary Checks

This involves checking for visible damage to the sensor or the wiring, and using an OBD-II scanner to confirm the code.

Advanced Diagnostics

Advanced diagnostics may involve checking the sensor’s signal with an oscilloscope or testing the ECM’s output.

Fixing the P0350 Code

After diagnosing the problem, it’s time to address it.

Sensor Replacement

If the sensor is faulty, replacing it usually solves the problem.

Wiring Repair

Repairing or replacing damaged wires or connectors should resolve the issue if the wiring was the problem.

ECM Replacement

In rare cases where the ECM is faulty, it may need to be replaced or reprogrammed.

Preventing P0350 Code

Prevention is always better than cure. So, what steps can you take to prevent this issue?

Regular Maintenance

Regular vehicle maintenance, including checking and replacing the camshaft position sensor as needed, can help prevent P0350 code issues.

Immediate Action on Symptoms

Taking immediate action when you notice any symptoms can prevent more severe damage.


Understanding and resolving the P0350 code issue is critical to maintaining optimal engine performance. Regular vehicle maintenance and promptly addressing symptoms can help prevent this issue. Remember, your vehicle is an intricate machine; care and vigilance can ensure its long-term health.


What is the primary function of the camshaft position sensor?

The primary function of the camshaft position sensor is to monitor the speed of the camshaft and relay this information to the vehicle’s ECM, which in turn controls the engine’s ignition timing.

What are some common symptoms of a P0350 code issue?

Some common symptoms include engine performance issues, ignition problems, and decreased fuel efficiency.

Is it safe to drive with a P0350 code?

While it may not immediately damage your vehicle, driving with a P0350 code could cause severe engine problems over time. Hence, it’s advisable to address the issue as soon as possible.