AutoCodes – Volkswagen – P0018 Volkswagen

P0018 Volkswagen Code - Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'

Quick Answer

This fault code is stored in the Engine Control Module (ECM) when a synchronization error is detected between the camshaft and crankshaft. Common causes include Faulty Camshaft Position Sensor, Faulty Crankcase Pressure Sensor, Camshaft Position Sensor/Crankcase Pressure Sensor harness is open or shorted. 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: P0018 Volkswagen indicates Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'.
Common causes: Common causes include Faulty Camshaft Position Sensor, Faulty Crankcase Pressure Sensor, Camshaft Position Sensor/Crankcase Pressure Sensor harness is open or shorted.
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 21,145

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 05, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0018 Volkswagen Description

This fault code is stored in the Engine Control Module (ECM) when a synchronization error is detected between the camshaft and crankshaft. The output from both the camshaft and crankshaft sensors is compared and if the signal is outside of specifications then a correlation fault is flagged. The valve timing should be checked before any electrical fault finding is carried out. An oscilloscope can be used to validate the timing. However, some vehicles have a keyless drive on the phonic wheel pickup for the camshaft and/or crankshaft sensor. In this case, the static valve timing may be within specification but the phonic wheel is out of alignment.

OBDII Code P0018 Volkswagen - Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A' - AutoCodes.com — P0018 Volkswagen Code - Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'

What does this mean?

What are the Possible Causes of the DTC P0018 Volkswagen?

Faulty Camshaft Position Sensor
Faulty Crankcase Pressure Sensor
Camshaft Position Sensor/Crankcase Pressure Sensor harness is open or shorted
Camshaft Position Sensor/Crankcase Pressure Sensor circuit poor electrical connection
Mechanical Defect

How to Fix the DTC P0018 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 P0018 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 P0018 Volkswagen Code

1. What are common symptoms of OBDII code P0018 in a Volkswagen related to Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'?

Symptoms may include engine misfires, rough idling, decreased fuel efficiency, and difficulty starting the vehicle.

2. What are possible causes of OBDII code P0018 in a Volkswagen?

Causes may include a faulty camshaft position sensor, issues with the timing belt or chain, problems with the crankshaft position sensor, or engine mechanical issues.

3. How can I diagnose the cause of OBDII code P0018 in my Volkswagen?

Diagnosis typically involves checking the camshaft and crankshaft sensors, inspecting the timing components, verifying proper alignment, and performing a thorough engine inspection.

4. Can driving with OBDII code P0018 in a Volkswagen cause further damage?

Continued driving with this code may lead to more severe engine damage, reduced performance, and potential engine stalling, so it's recommended to address the issue promptly.

5. How can I repair OBDII code P0018 in my Volkswagen?

Repairs may involve replacing the camshaft or crankshaft position sensor, repairing or replacing timing components, ensuring proper timing alignment, and clearing the trouble code.

6. Is it safe to continue driving my Volkswagen with OBDII code P0018 present?

It is not recommended to drive the vehicle with this code active, as it can lead to more serious engine issues and potential safety hazards.

7. Can I reset OBDII code P0018 in my Volkswagen without fixing the underlying issue?

While you can clear the code temporarily, it will likely reappear until the root cause is addressed, so it's best to diagnose and repair the problem.

8. How long does it typically take to repair OBDII code P0018 in a Volkswagen?

The repair time can vary depending on the exact cause and extent of the issue, but it may take a few hours to a full day for diagnosis and repair.

9. Are there any preventive measures to avoid OBDII code P0018 in a Volkswagen?

Regular maintenance, timely sensor inspections, and following the manufacturer's recommended service intervals can help prevent issues leading to this trouble code.

10. Can a DIY enthusiast with moderate mechanical skills repair OBDII code P0018 in a Volkswagen?

Depending on the specific cause, DIY repair may be possible for some individuals, but it's recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is fully resolved.