The P0347: Camshaft Position Sensor A Circuit Low Input (Bank 2) code indicates that the engine control module (ECM) is receiving a lower-than-expected input signal from camshaft position sensor A on bank 2. This sensor monitors the camshaft’s position, which is essential for proper engine timing and fuel injection. A low input signal from this sensor can lead to poor engine performance, misfires, or stalling.
P0347 – Quick Overview
| Meaning | P0347: Camshaft Position Sensor A Circuit Low Input (Bank 2) |
| Is it serious? | Yes, this code can cause engine misfires, stalling, and poor performance, and could lead to engine damage if left unresolved. |
| Possible causes | – Faulty camshaft position sensor – Low input signal – Wiring issues |
| How to diagnose? | – Test sensor input – Inspect and repair wiring – Replace sensor if necessary |
P0347 Meaning
The P0347: Camshaft Position Sensor A Circuit Low Input (Bank 2) code means that the ECM is receiving a signal from camshaft position sensor A on bank 2 that is lower than expected. This can disrupt engine timing and lead to drivability issues such as stalling, rough idling, or misfires. Common causes include a faulty camshaft position sensor, wiring problems, or signal disruptions.
Step-by-step diagnostic guide
Follow these steps to diagnose and resolve the P0347 code by addressing potential causes one by one.
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional related codes that might provide more clues to the problem. | OBD-II Scanner |
| Inspect Camshaft Position Sensor A | Visually inspect the sensor for signs of damage, corrosion, or loose connections. Ensure it is securely mounted and properly connected. | Flashlight, Safety Gloves |
| Test Camshaft Position Sensor Input Signal | Use a multimeter to measure the sensor’s input signal. Compare the readings to the manufacturer’s specifications to ensure the signal is within the expected range. | Multimeter, Manufacturer’s Specifications |
| Inspect and Repair Wiring | Check the wiring and connectors leading to camshaft position sensor A for signs of damage, wear, or corrosion. Repair or replace damaged wiring as needed. | Flashlight, Wiring Repair Kit |
| Replace the Sensor if Necessary | If camshaft position sensor A is faulty or providing a weak signal, replace it with a new sensor to restore proper function. | Replacement Camshaft Position Sensor, Safety Gloves |
| Clear the Code and Test Drive | After completing repairs, clear the P0347 code using an OBD-II scanner. Test drive the vehicle to ensure the issue is resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the vehicle to confirm that the P0347 code has not returned. If it reappears, further diagnosis may be required. | OBD-II Scanner |
This diagnostic guide will help you accurately diagnose and resolve the P0347 code, ensuring that camshaft position sensor A on bank 2 provides proper input signals to maintain engine timing and performance.
I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko