How to fix P0349? | Camshaft Position Sensor “A” Circuit Intermittent (Bank 2)

Описание: What is P0349?
P0349 is an OBD-II diagnostic trouble code that stands for: “Camshaft Position Sensor 'A' Circuit Intermittent (Bank 2)”
It means that signal coming from the camshaft position sensor is lost or erratic.

📖 Read more about P0349: https://obdcode.org/p0349/

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What is Intake Camshaft Bank 2?
Bank 2 refers to the opposite side of the engine with cylinder 1.

The intake camshaft controls the intake valves, letting air into the cylinders.

The camshaft position sensor monitors the cam’s position and helps the ECU time ignition and fuel injection correctly.

Why P0349 Got Triggered?
This code is triggered when the ECU detects:

▶︎No signal
▶︎Intermittent signal
▶︎Incorrect signal from the intake camshaft position sensor on bank 2

🔍 Common Root Causes of P0349

▶︎Root Cause 1: 🧯 Failing or Defective Camshaft Position Sensor
Most common issue; the sensor may wear out or lose sensitivity over time.

▶︎Root Cause 2: 🔌 Damaged or Frayed Wiring Harness
Loose connections, corrosion, or frayed wires can interrupt the sensor’s signal.

▶︎Root Cause 3: ⛓️ Faulty Timing Belt or Chain
If the timing is off, the camshaft position won’t align with crankshaft signals.

▶︎Root Cause 4: 💻 ECU Failure or Software Issues
Rare, but a glitch in the ECU software or hardware can misinterpret the signal.

▶︎Root Cause 5: ⚙️ Damaged Camshaft Position Sensor Reluctor Wheel
This gear-like component spins with the cam and helps the sensor read its position.

▶︎Root Cause 6: 🧼 Sludge and Dust Buildup in the Camshaft Sensor
Oil contamination or buildup can block sensor readings.

▶︎Root Cause 7: 🔧 Improper Sensor Installation
If the sensor isn’t properly aligned or tightened, it can give incorrect readings.


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Chapters:
00:00 - Intro
00:13 - What is P0349?
00:48 - What is Bank 2 Intake Camshaft?
01:41 - What triggers P0349?
02:28 - Other OBD codes related to P0349
04:01 - Where is the P0349 sensor located?
04:20 - How to Reset P0349?
05:08 - Possible Root causes of P0349