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P0340 Mercury Code - Camshaft Position Sensor Circuit Bank 1 Sensor 1

- Code Popularity: 13,650 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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By - Updated Jun 29, 2020
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|Code P0340 Mercury Possible Causes

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

|How do I Fix the Code P0340 Mercury?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your Mercury have Safety Recalls? → Check here

|Code P0340 Mercury Tech Notes

There is a factory service bulletin for the 2006 Mercury Mountaineer:
2006 Mercury Mountaineer Factory Service Bulletin OBDII Code P0340

|What is the Cost to Diagnose the Code P0340 Mercury?

Labor: 1.0

The cost of diagnosing the P0340 Mercury code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|When is the Code P0340 Mercury Detected?

The camshaft position sensor signal is not detected by the Engine Control Module(ECM) during the first few seconds of engine cranking

|What are Code P0340 Mercury Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of Power
  • Engine Stall

|Code P0340 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.

*Sensor design may vary for your model and year

OBDII Code P0340 Mercury - Camshaft Position Sensor Circuit Bank 1 Sensor 1 -
P0340 Mercury Code - Camshaft Position Sensor Circuit Bank 1 Sensor 1

|Need More Information on the P0340 Mercury Code?

Need more information on how to fix the P0340 Mercury code? Get Access to Factory Service Manuals

|Need Help with the P0340 Mercury Code?

Get the P0340 Mercury code diagnosed by a professional: Find a repair shop in your area

|Code P0340 Mercury comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P0340 Mercury code? Have you replaced any parts?
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