AutoCodes – Mercury – P2337 Mercury

P2337 Mercury Code - Cylinder 2 Above Knock Threshold

Quick Answer

The Knock Sensor (KS) senses engine knocking (also known as detonation or pinging) using a piezoelectric element. Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock 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: P2337 Mercury indicates Cylinder 2 Above Knock Threshold.
Common causes: Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock 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 1,137

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2337 Mercury Description

The Knock Sensor (KS) senses engine knocking (also known as detonation or pinging) using a piezoelectric element. The sensor is attached to the cylinder block, cylinder head or intake manifold. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Engine Control Module (ECM). The ECM uses this signal to retard the ignition timing and protect the engine from this damaging pre-ignition.

OBDII Code P2337 Mercury - Cylinder 2 Above Knock Threshold - AutoCodes.com — P2337 Mercury Code - Cylinder 2 Above Knock Threshold

What does this mean?

What are the Possible Causes of the DTC P2337 Mercury?

Faulty knock sensor
Knock sensor circuit poor electrical connection
Knock sensor harness is open or shorted
Faulty Engine Control Module (ECM)

How to Fix the DTC P2337 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 P2337 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.

Need more information about the P2337 Mercury code?

Need more information on how to fix the P2337 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2337 Mercury 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 P2337 Mercury Code

1. What are the common symptoms of OBDII code P2337 in a Mercury, indicating Cylinder 2 Above Knock Threshold?

- Common symptoms include engine knocking or pinging noises, reduced engine performance, rough idling, and potential misfires.

2. What are the possible causes of OBDII code P2337 in a Mercury?

- The code P2337 can be triggered by issues such as a faulty knock sensor, wiring or connector problems, engine mechanical issues, or a malfunctioning PCM.

3. How can I diagnose the cause of OBDII code P2337 in my Mercury?

- To diagnose the issue, you may need to perform a thorough inspection of the knock sensor and its wiring, check for any engine mechanical problems, and use a diagnostic scanner to read live data from the PCM.

4. Can driving with OBDII code P2337 in a Mercury cause further damage to the vehicle?

- Continuing to drive with code P2337 may lead to engine damage over time if the underlying issue is not addressed promptly.

5. How can I repair OBDII code P2337 in a Mercury?

- Repair options may include replacing the knock sensor, repairing any damaged wiring or connectors, addressing engine mechanical issues, or reprogramming the PCM.

6. Is it safe to continue driving my Mercury with the check engine light on due to code P2337?

- It is not recommended to drive your vehicle with the check engine light on, as it indicates a problem that needs to be addressed to prevent further damage.

7. Can a DIY enthusiast fix OBDII code P2337 in a Mercury at home?

- Depending on your skills and tools, you may be able to address simpler causes such as wiring issues, but diagnosing and repairing more complex problems may require professional assistance.

8. How much does it typically cost to repair OBDII code P2337 in a Mercury at a mechanic or dealership?

- Repair costs can vary widely depending on the exact cause of the issue, but expect to pay anywhere from $100 to $500 or more for parts and labor.

9. Will resetting the OBDII code P2337 in my Mercury make the problem go away?

- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing code P2337 to reappear.

10. How can I prevent OBDII code P2337 from reoccurring in my Mercury in the future?

- To prevent the code from coming back, ensure regular maintenance of your vehicle, address any engine performance issues promptly, and fix any underlying causes of code P2337 as soon as possible.