AutoCodes – Mercury – P0349 Mercury

P0349 Mercury Code - Camshaft Position Sensor 'A' Circuit Intermittent Bank 2

Quick Answer

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0349 Mercury indicates Camshaft Position Sensor 'A' Circuit Intermittent Bank 2.
Common causes
Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,133
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 29, 2020
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Code P0349 Mercury Description

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Engine Control Module(ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field causes the voltage from the sensor to change.
When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing the timing of cylinder identification signals.
OBDII Code P0349 Mercury - Camshaft Position Sensor 'A' Circuit Intermittent Bank 2 - AutoCodes.com
P0349 Mercury Code - Camshaft Position Sensor 'A' Circuit Intermittent Bank 2

What are the Possible Causes of the DTC P0349 Mercury?

  • Faulty Camshaft Position Sensor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection
  • Variable Cam Timing (VTC) Solenoid
  • Faulty starter motor
  • Starting system circuit
  • Dead (Weak) battery

How to Fix the DTC P0349 Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0349 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0349 Mercury Code

1. What are the common symptoms of OBDII code P0349 in a Mercury related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2?

- Common symptoms include engine misfires, rough idling, poor acceleration, and stalling.

2. What are the possible causes of OBDII code P0349 in a Mercury related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2?

- Possible causes include a faulty camshaft position sensor, wiring issues, sensor connections problems, or a problem with the sensor circuit.

3. How can I diagnose the OBDII code P0349 in a Mercury related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2?

- Diagnose by checking the sensor's wiring and connections, testing the sensor's voltage and signal, and using a scan tool to monitor sensor data.

4. Can I continue driving my Mercury with OBDII code P0349 related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2?

- It is not recommended to continue driving with this code as it can lead to further engine damage or breakdown.

5. What is the typical cost to repair OBDII code P0349 in a Mercury related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2?

- The cost of repair can vary depending on the exact issue, but it typically ranges from $100 to $300 for parts and labor.

6. Are there any DIY repair tips for fixing OBDII code P0349 related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2 in a Mercury?

- DIY repair tips include checking and cleaning sensor connections, inspecting wiring for damage, and replacing the sensor if necessary.

7. How long does it take to repair OBDII code P0349 in a Mercury related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2?

- The repair time can vary depending on the exact issue and the mechanic's expertise, but it typically takes 1-2 hours to complete.

8. Can a faulty camshaft position sensor cause other OBDII codes to appear in a Mercury?

- Yes, a faulty camshaft position sensor can trigger other related codes such as P0340, P0341, and P0344 in addition to P0349.

9. Is it necessary to reset the OBDII system after repairing OBDII code P0349 related to the Camshaft Position Sensor 'A' Circuit Intermittent Bank 2 in a Mercury?

- Yes, it is recommended to clear the codes and reset the system using a scan tool after completing the repair to ensure the issue has been resolved.

10. Can extreme weather conditions affect the performance of the camshaft position sensor in a Mercury, leading to OBDII code P0349?

- Yes, extreme heat or cold can affect the sensor's performance, causing intermittent issues and triggering the OBDII code P0349.

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