P0018 Saturn Code - Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor 'A'
Quick Answer
The Crankshaft Position (CKP) sensor is a permanent magnet generator, known as a variable reluctance sensor. Common causes include Mechanical timing fault, Blocked oil passage, Low oil level. 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 Saturn indicates Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor 'A'.
- Common causes
- Common causes include Mechanical timing fault, Blocked oil passage, Low oil level.
- 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.
Code P0018 Saturn Description
The Camshaft Position (CMP) sensor is triggered by a notched reluctor wheel built into the exhaust camshaft sprocket. The CMP sensor provides 6 signal pulses every camshaft revolution. Each notch, or feature of the reluctor wheel is of a different size for individual cylinder identification. This means the CMP and crankshaft position (CKP) signals are pulse width encoded to enable the PCM to constantly monitor their relationship. This relationship is used to determine camshaft actuator position and control its phasing at the correct value. The PCM also uses this signal to identify the compression stroke of each cylinder, and for sequential fuel injection. The CMP sensor is connected to the PCM by a 12-volt, low reference, and signal circuit.
What are the Possible Causes of the DTC P0018 Saturn?
- Mechanical timing fault
- Blocked oil passage
- Low oil level
- Faulty Intake ('A') Camshaft Position (CMP) Sensor
- Faulty Crankshaft Position (CKP) Sensor
How to Fix the DTC P0018 Saturn?
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
There is a factory service bulletin for the following Saturn models:
2007-2009 Saturn AURA
2008-2010 Saturn OUTLOOK
2008-2010 Saturn VUE
Saturn Factory Service Bulletin OBDII Code P0018
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0018 Saturn 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 Saturn code?
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Need Help with the Code?
Get the P0018 Saturn code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0018 Saturn Code
1. What are the common symptoms of OBDII code P0018 in a Saturn related to crankshaft-camshaft position correlation issues?
- Common symptoms include engine misfires, rough idling, poor acceleration, and potentially stalling.
2. What are the possible causes of OBDII code P0018 in a Saturn indicating a problem with the correlation between the crankshaft and camshaft positions on Bank 2 Sensor 'A'?
- Possible causes include a faulty camshaft position sensor, a malfunctioning crankshaft position sensor, timing chain issues, or engine timing problems.
3. How can a Saturn owner diagnose the OBDII code P0018 related to the crankshaft-camshaft position correlation on Bank 2 Sensor 'A'?
- Diagnosis typically involves checking the sensors for proper functioning, inspecting the timing chain for wear or damage, and verifying the engine timing alignment.
4. What are some repair tips for resolving OBDII code P0018 in a Saturn triggered by a crankshaft-camshaft position correlation problem on Bank 2 Sensor 'A'?
- Repair tips may include replacing the camshaft or crankshaft position sensor, inspecting and potentially replacing the timing chain, and ensuring proper engine timing adjustments.
5. Can driving a Saturn with OBDII code P0018 related to crankshaft-camshaft position correlation issues on Bank 2 Sensor 'A' cause further damage to the engine?
- Continuing to drive with this code may lead to more severe engine problems, such as engine damage due to improper timing or increased fuel consumption.
6. How crucial is it to address OBDII code P0018 in a Saturn indicating a crankshaft-camshaft position correlation issue on Bank 2 Sensor 'A' promptly?
- It is essential to address this issue promptly to avoid potential engine damage, poor performance, and safety risks associated with driving a vehicle with timing-related problems.
7. Are there any preventative measures Saturn owners can take to avoid encountering OBDII code P0018 related to crankshaft-camshaft position correlation issues on Bank 2 Sensor 'A'?
- Regular maintenance, such as timely sensor replacements, checking and adjusting engine timing, and inspecting the timing chain, can help prevent such issues from occurring.
8. Is it possible to reset OBDII code P0018 in a Saturn without addressing the underlying crankshaft-camshaft position correlation problem on Bank 2 Sensor 'A'?
- Resetting the code without resolving the root cause will likely result in the code reappearing once the system detects the ongoing issue during subsequent drive cycles.
9. What role does Bank 2 Sensor 'A' play in the OBDII code P0018 related to crankshaft-camshaft position correlation in a Saturn?
- Bank 2 Sensor 'A' refers to the specific location of the sensor involved in monitoring the correlation between the crankshaft and camshaft positions on the second bank of cylinders in the engine.
10. Can a Saturn owner attempt to fix OBDII code P0018 indicating a crankshaft-camshaft position correlation problem on Bank 2 Sensor 'A' without professional help?
- While some basic checks and sensor replacements can be done by DIY enthusiasts, diagnosing and repairing complex issues like timing chain problems may require professional expertise to ensure proper resolution.
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