AutoCodes – Dodge – P2337 Dodge

P2337 Dodge 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 Dodge 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 2,855

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

What does this mean?

What are the Possible Causes of the DTC P2337 Dodge?

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 Dodge?

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 Dodge 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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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 Dodge Code

1. What does OBDII code P2337 mean on a Dodge vehicle?

P2337 indicates that cylinder 2 is experiencing a knock or detonation that exceeds the allowable threshold set by the engine control module (ECM).

2. What are the common symptoms of code P2337 in a Dodge?

Symptoms may include engine knocking sounds, reduced performance, poor fuel economy, misfires, and the check engine light illuminating.

3. What causes code P2337 to appear on a Dodge?

Common causes include faulty knock sensors, incorrect ignition timing, carbon buildup in the cylinder, poor fuel quality, or mechanical issues like damaged pistons or rods.

4. Can bad fuel cause code P2337 in a Dodge?

Yes, low-quality or incorrect octane fuel can increase the likelihood of engine knock, triggering the P2337 code.

5. How is code P2337 diagnosed in a Dodge?

Technicians typically use a scan tool to read the code, inspect the knock sensor, check ignition timing, and evaluate fuel quality and engine components for damage.

6. Can I drive my Dodge with code P2337 active?

Driving with this code is not recommended, as prolonged knocking can cause severe engine damage if the issue isn’t addressed promptly.

7. How is code P2337 fixed on a Dodge?

Repairs may include replacing a faulty knock sensor, cleaning or replacing carbon buildup in the cylinder, correcting ignition timing, or using higher-octane fuel.

8. Does code P2337 always mean a knock sensor is bad?

No, while a faulty knock sensor is a common cause, other issues like poor fuel quality, carbon deposits, or mechanical engine problems can also trigger the code.

9. How much does it cost to fix code P2337 in a Dodge?

Repair costs vary depending on the cause, ranging from $100-$300 for a knock sensor replacement to higher costs for engine repairs if mechanical issues are involved.

10. Can regular maintenance prevent code P2337 on a Dodge?

Yes, using high-quality fuel, performing regular engine tune-ups, and addressing carbon buildup can help prevent this code from occurring.