AutoCodes – Audi – P0018 Audi

P0018 Audi 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 Audi 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 30,483
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 05, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P0018 Audi 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 Audi - Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A' - AutoCodes.com
P0018 Audi Code - Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'

What are the Possible Causes of the DTC P0018 Audi?

  • 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 Audi?

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 Audi 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 P0018 Audi code?

Need more information on how to fix the P0018 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0018 Audi code diagnosed by a professional: Find a repair shop in your area

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 Audi Code

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

Symptoms may include engine misfires, rough idling, decreased fuel efficiency, and potential stalling.

2. What are the possible causes of OBDII code P0018 in an Audi?

Common causes include a faulty camshaft position sensor, issues with the timing belt or chain, engine oil problems, or a malfunctioning variable valve timing (VVT) system.

3. How can I diagnose the source of OBDII code P0018 in my Audi?

Diagnosis typically involves checking the camshaft and crankshaft position sensors, inspecting the timing belt or chain for proper alignment, and ensuring there are no oil flow issues to the VVT system.

4. Is it safe to continue driving with OBDII code P0018 present in my Audi?

It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage and potentially unsafe driving conditions.

5. Can I clear OBDII code P0018 in my Audi and see if it returns?

While you can clear the code, it is important to address the underlying issue causing the fault code to prevent potential long-term damage to the engine.

6. How much does it typically cost to repair OBDII code P0018 in an Audi?

Repair costs can vary depending on the specific cause of the code, but it is advisable to budget for sensor replacement, timing system inspection, and potential oil system repairs.

7. Are there any DIY tips for addressing OBDII code P0018 in an Audi?

DIY enthusiasts may attempt to replace the camshaft position sensor or inspect the timing components, but more complex repairs involving the VVT system or timing chain should be left to professionals.

8. Can a mechanic reset OBDII code P0018 without repairing the issue?

A mechanic can clear the fault code, but it will likely return if the underlying problem is not fixed.

9. How long does it take to repair OBDII code P0018 in an Audi?

Repair times can vary depending on the cause of the code and the extent of the repair needed, but it may take a few hours to a full day for diagnosis and repair.

10. Will OBDII code P0018 cause permanent damage to my Audi if left untreated?

Ignoring OBDII code P0018 can potentially cause severe engine damage over time, so it is crucial to address the issue promptly to prevent further harm to the vehicle.

Discuss the causes and fixes for P0018 Audi OBDII Code

Code P0018 Audi comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play