AutoCodes – Dodge – P2543 Dodge

P2543 Dodge Code - Low Pressure Fuel System Sensor Circuit Intermittent

Quick Answer

The Engine Control Module (ECM) monitors the Low Pressure Fuel System Sensor Circuit signal. Common causes include Low fuel level, Faulty Low Pressure Fuel System Sensor, Low Pressure Fuel System 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
P2543 Dodge indicates Low Pressure Fuel System Sensor Circuit Intermittent.
Common causes
Common causes include Low fuel level, Faulty Low Pressure Fuel System Sensor, Low Pressure Fuel System 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,258
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 17, 2019
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Code P2543 Dodge Description

The Engine Control Module (ECM) monitors the Low Pressure Fuel System Sensor Circuit signal. The ECM sets the OBDII code when the Low Pressure Fuel System Sensor signal is out of factory specifications.
OBDII Code P2543 Dodge - Low Pressure Fuel System Sensor Circuit Intermittent - AutoCodes.com
P2543 Dodge Code - Low Pressure Fuel System Sensor Circuit Intermittent

What are the Possible Causes of the DTC P2543 Dodge?

  • Low fuel level
  • Faulty Low Pressure Fuel System Sensor
  • Low Pressure Fuel System Sensor harness is open or shorted
  • Low Pressure Fuel System Sensor circuit poor electrical connection

How to Fix the DTC P2543 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 P2543 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 P2543 Dodge Code

What does the OBDII code P2543 indicate on a Dodge vehicle?

The P2543 code indicates an intermittent issue in the low-pressure fuel system sensor circuit, which monitors the fuel pressure in the system.

What are common symptoms of the P2543 code on a Dodge?

Symptoms may include hard starting, reduced engine performance, stalling, poor fuel economy, and the check engine light illuminating.

What causes the P2543 code to appear on a Dodge?

Common causes include a faulty low-pressure fuel sensor, damaged wiring or connectors in the fuel system circuit, or issues with the fuel pump or fuel pressure regulator.

Can a faulty low-pressure fuel sensor trigger the P2543 code?

Yes, a malfunctioning low-pressure fuel sensor is a primary cause of this code.

How can I diagnose the P2543 code on my Dodge?

Start by inspecting the wiring and connectors for damage or corrosion, check the fuel pressure sensor, and test the fuel pressure regulator for proper operation.

Is it safe to drive with the P2543 code?

Driving with this code is not recommended as it may lead to engine performance issues, stalling, or reduced fuel efficiency.

How do I fix the P2543 code on a Dodge?

Repairs may involve replacing the low-pressure fuel sensor, repairing damaged wiring, or addressing issues with the fuel pressure regulator or fuel pump.

Will clearing the P2543 code solve the problem?

Clearing the code may temporarily remove the check engine light, but the underlying issue must be addressed to prevent the code from returning.

How much does it cost to repair the P2543 code on a Dodge?

Repair costs can vary depending on the issue but typically range from $100 to $500, depending on parts and labor.

Can a P2543 code affect fuel economy?

Yes, an intermittent fuel system issue can negatively impact fuel economy and overall engine performance.

Discuss the causes and fixes for P2543 Dodge OBDII Code

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