AutoCodes – Ford – P0340 1999 Ford F150

P0340 1999 Ford F150 Code - Camshaft Position Sensor Circuit Malfunction Bank 1

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
P0340 1999 Ford F150 indicates Camshaft Position Sensor Circuit Malfunction Bank 1.
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.
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Code Popularity 10,171
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 13, 2019
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Code P0340 1999 Ford F150 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 cause 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 timing of cylinder identification signals.

*Sensor design may vary for your model and year
OBDII Code P0340 1999 Ford F150 - Camshaft Position Sensor Circuit Malfunction Bank 1 - AutoCodes.com
P0340 1999 Ford F150 Code - Camshaft Position Sensor Circuit Malfunction Bank 1

What are the Possible Causes of the DTC P0340 1999 Ford F150?

  • 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 to Fix the DTC P0340 1999 Ford F150?

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 P0340 1999 Ford F150 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.

Need more information about the P0340 1999 Ford F150 code?

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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 P0340 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P0340 on a 1999 Ford F150?

- Common symptoms include rough idling, stalling, poor acceleration, and difficulty starting the vehicle.

2. What does the OBDII code P0340 for a 1999 Ford F150 indicate?

- The code P0340 indicates a malfunction in the camshaft position sensor circuit for Bank 1.

3. What are the possible causes of the P0340 code on a 1999 Ford F150?

- Possible causes include a faulty camshaft position sensor, wiring issues, sensor connection problems, or a damaged sensor.

4. How can I diagnose the cause of the P0340 code on my 1999 Ford F150?

- Diagnose the issue by checking the camshaft position sensor wiring, inspecting the sensor for damage, and testing the sensor's connection.

5. Can I drive my 1999 Ford F150 with the P0340 code?

- It is not recommended to drive the vehicle with the P0340 code as it can lead to engine performance issues and potential further damage.

6. How do I repair the Camshaft Position Sensor Circuit Malfunction on Bank 1 in my 1999 Ford F150?

- Repair involves replacing the camshaft position sensor, checking and repairing any wiring issues, and ensuring a secure connection.

7. Will resetting the OBDII code P0340 on my 1999 Ford F150 fix the issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the malfunction.

8. Is it necessary to replace the camshaft position sensor if the P0340 code appears on a 1999 Ford F150?

- Yes, it is recommended to replace the camshaft position sensor if it is found to be faulty or damaged.

9. How much does it typically cost to repair the Camshaft Position Sensor Circuit Malfunction on a 1999 Ford F150?

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

10. Can a DIY enthusiast replace the camshaft position sensor on a 1999 Ford F150 to fix the P0340 code?

- Yes, replacing the camshaft position sensor is a relatively straightforward repair that can be done by a DIY enthusiast with basic mechanical skills and tools.

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