AutoCodes – Volkswagen – P1391 Volkswagen

P1391 Volkswagen Code - Camshaft Position Sensor Bank 2 Short To Ground

Quick Answer

This fault code is stored in the Engine Control Module (ECM) when the output from the Camshaft Position Sensor is not as expected or missing. Common causes include Faulty Camshaft Position (CMP) 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
P1391 Volkswagen indicates Camshaft Position Sensor Bank 2 Short To Ground.
Common causes
Common causes include Faulty Camshaft Position (CMP) 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 5,528
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 12, 2020
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Code P1391 Volkswagen Description

This fault code is stored in the Engine Control Module (ECM) when the output from the Camshaft Position Sensor is not as expected or missing. The ECM uses information from the Crankshaft Position Sensor to validate the signal from the Camshaft Position Sensor. The phonic wheel for the camshaft position should also be inspected as incorrect fitment or damage can affect the signal. Incorrect valve timing can also cause this fault. If the vehicle is fitted with variable valve timing the operation of this system should also be tested. A good quality oil supply is vital for the correct operation of variable valve timing. The lubrication system should also be inspected when this fault occurs.
OBDII Code P1391 Volkswagen - Camshaft Position Sensor Bank 2 Short To Ground - AutoCodes.com
P1391 Volkswagen Code - Camshaft Position Sensor Bank 2 Short To Ground

What are the Possible Causes of the DTC P1391 Volkswagen?

  • Faulty Camshaft Position (CMP) Sensor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P1391 Volkswagen?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1391 Volkswagen 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 P1391 Volkswagen Code

1. What are the common symptoms of OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

The common symptoms include rough idling, engine misfires, difficulty starting the vehicle, and a noticeable decrease in engine performance.

2. What causes the OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

The code is typically triggered by a short to ground in the wiring or connections related to the camshaft position sensor in bank 2. This can be caused by damaged wiring, a faulty sensor, or a poor connection.

3. How can I diagnose the issue related to OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

You can use a diagnostic scanner to read the fault codes and perform a thorough inspection of the camshaft position sensor, wiring, and connections in bank 2. Testing the sensor's resistance and checking for any visible damage to the wiring can help pinpoint the issue.

4. Is it safe to drive with the OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

It is not recommended to drive with this code active as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly to avoid any complications.

5. How can I repair OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

Repairing the issue involves identifying and fixing the short to ground in the wiring or connections related to the camshaft position sensor in bank 2. This may require repairing or replacing damaged wiring, fixing the sensor connection, or replacing the sensor itself if it's faulty.

6. Can a DIY enthusiast fix the OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

While some DIY enthusiasts may have the skills to diagnose and repair this issue, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the problem is resolved correctly.

7. How much does it cost to repair OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

The cost of repair can vary depending on the extent of the damage, the need for parts replacement, and labor charges. It's best to get a few quotes from reputable mechanics to determine the cost for your specific situation.

8. Can a faulty camshaft position sensor cause OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

Yes, a faulty camshaft position sensor can cause this code to be triggered, especially if the sensor is shorting to ground. Replacing the sensor may resolve the issue in such cases.

9. How long does it take to repair OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground?

The repair time can vary depending on the complexity of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

10. Will resetting the OBDII code P1391 (Volkswagen) Camshaft Position Sensor Bank 2 Short To Ground make it go away permanently?

Resetting the code without addressing the underlying issue will not make it go away permanently. The code is likely to return until the root cause, such as the short to ground, is properly diagnosed and repaired.

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