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

Quick Answer

The P0018 diagnostic trouble code (DTC) for Pontiac vehicles indicates a problem with the correlation between the crankshaft position sensor and the camshaft position sensor in Bank 2 Sensor 'A'. Common causes include Faulty crankshaft position sensor, Faulty camshaft position sensor, Wiring or connector issues related to the sensors. 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 Pontiac indicates Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor 'A'.
Common causes
Common causes include Faulty crankshaft position sensor, Faulty camshaft position sensor, Wiring or connector issues related to the sensors.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0018 Pontiac Description

The P0018 diagnostic trouble code (DTC) for Pontiac vehicles indicates a problem with the correlation between the crankshaft position sensor and the camshaft position sensor in Bank 2 Sensor 'A'. In modern vehicles, these sensors play a crucial role in ensuring proper engine timing and performance. The crankshaft position sensor monitors the rotation speed and position of the crankshaft, while the camshaft position sensor detects the position of the camshaft and helps determine when to open and close the engine's valves.

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

Common Causes of P0018 Pontiac

  1. Faulty crankshaft position sensor.
  2. Faulty camshaft position sensor.
  3. Wiring or connector issues related to the sensors.
  4. Timing chain/belt misalignment or wear.
  5. ECM software or hardware issues.

Symptoms of P0018 Pontiac

  1. Check Engine Light illuminated on the dashboard.
  2. Engine misfires or rough idling.
  3. Decreased fuel efficiency.
  4. Engine stalling or hesitation during acceleration.
  5. Unusual engine noises, such as knocking or ticking.

How to Fix P0018 Pontiac

  1. Begin by using a diagnostic scan tool to confirm the P0018 code and identify the specific sensor causing the issue.
  2. Inspect the wiring and connectors associated with the crankshaft and camshaft position sensors for any damage or corrosion. Repair or replace as needed.
  3. Test the sensors themselves using a multimeter to ensure they are functioning correctly. Replace any faulty sensors.
  4. Check the timing chain/belt for proper alignment and tension. Replace if necessary.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P0018 Pontiac

The cost of repairing the P0018 code on a Pontiac can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to get quotes from multiple shops to ensure you're getting a fair price. Additionally, if the problem is related to the timing chain/belt, the cost may increase significantly due to the complexity of the repair.

What does this mean?

Tech Notes for P0018 Pontiac

If this Diagnostic Trouble Code (DTC) started after recent internal engine repairs, inspect for proper engine mechanical timing. With the camshaft cover removed and the #1 cylinder at top dead center, make sure that the darkened chain links are lined up with the alignment marks on the exhaust and intake cam sprockets.



There is a factory service bulletin for the following Pontiac models:

2007-2010 Pontiac G6

2008-2009 Pontiac G8

2008-2009 Pontiac Torrent

Pontiac Factory Service Bulletin OBDII Code P0018

When is the Code Detected?

The Powertrain Control Module (PCM) has detected the actual Camshaft Position (CMP) Sensor angle of one camshaft is greater or less than the commanded state.

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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.

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