P0018 Mercury Code - Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'
Quick Answer
The Powertrain Control Module (PCM) monitors the variable camshaft timing (VCT) position for a misalignment between the camshaft and crankshaft. Common causes include Camshaft timing incorrectly set, Continuous oil flow to the Variable Camshaft Timing (VCT) piston chamber, Erratic camshaft position due to low oil pressure. 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 Mercury indicates Crankshaft Position Camshaft Position Correlation Bank 2 Sensor 'A'.
- Common causes
- Common causes include Camshaft timing incorrectly set, Continuous oil flow to the Variable Camshaft Timing (VCT) piston chamber, Erratic camshaft position due to low oil pressure.
- 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 Mercury Description
What are the Possible Causes of the DTC P0018 Mercury?
- Camshaft timing incorrectly set
- Continuous oil flow to the Variable Camshaft Timing (VCT) piston chamber
- Erratic camshaft position due to low oil pressure
- Oil flow restriction in the oil passages or the VCT valve body
- VCT solenoid stuck in position
- Faulty Variable Camshaft Timing
- Variable Camshaft Timing harness is open or shorted
- Variable Camshaft Timing circuit poor electrical connection
- Damaged camshaft position (CMP) sensor
- Open or short in the CMP sensor circuits
- Radio frequency interference (RFI) interference
How to Fix the DTC P0018 Mercury?
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 Mercury 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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Frequently Asked Questions about P0018 Mercury Code
1. What does the OBDII code P0018 mean for a Mercury vehicle?
P0018 indicates a Crankshaft Position-Camshaft Position Correlation error for Bank 2 Sensor 'A', meaning the timing between the crankshaft and camshaft is out of alignment.
2. What are the common symptoms of code P0018 on a Mercury?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, a check engine light, or difficulty starting the engine.
3. What causes the P0018 code to appear in a Mercury?
Common causes include a stretched timing chain, worn timing chain tensioners or guides, a faulty camshaft or crankshaft sensor, or improper timing due to incorrect installation.
4. Can a bad camshaft or crankshaft position sensor trigger a P0018 code?
Yes, a faulty or misaligned camshaft or crankshaft position sensor can cause the P0018 code to appear.
5. How can I diagnose the P0018 code in my Mercury?
Diagnose by checking the camshaft and crankshaft position sensors, inspecting the timing chain for wear or slack, and verifying the alignment of the timing marks.
6. Is it safe to drive with a P0018 code on a Mercury?
Driving with a P0018 code is not recommended, as it can lead to engine damage or unsafe driving conditions due to potential loss of power or stalling.
7. What tools are needed to fix a P0018 code on a Mercury?
Tools may include an OBDII scanner, timing chain inspection tools, and basic hand tools. A repair manual specific to your Mercury model may also be useful.
8. How much does it cost to repair the P0018 code on a Mercury?
Repair costs vary widely depending on the issue. Replacing a camshaft sensor may cost $150–$300, while timing chain repairs can exceed $1,000 due to labor-intensive work.
9. Can low oil pressure cause the P0018 code on a Mercury?
Yes, low oil pressure or dirty oil can affect the performance of variable valve timing (VVT) components and trigger the P0018 code.
10. What should I do if I suspect a P0018 code on my Mercury vehicle?
Start by checking the oil level and condition, then scan for codes with an OBDII tool. If the issue persists, consult a professional mechanic for further diagnosis and repair.
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