AutoCodes – Acura – P2542 Acura

P2542 Acura Code - Low Pressure Fuel System Sensor Circuit High

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: P2542 Acura indicates Low Pressure Fuel System Sensor Circuit High.
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.

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Code Popularity 1,283

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 Jan 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2542 Acura 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 P2542 Acura - Low Pressure Fuel System Sensor Circuit High - AutoCodes.com — P2542 Acura Code - Low Pressure Fuel System Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P2542 Acura?

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 P2542 Acura?

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 P2542 Acura 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 P2542 Acura code?

Need more information on how to fix the P2542 Acura code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2542 Acura 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 P2542 Acura Code

1. What are the common symptoms of OBDII code P2542 in an Acura related to the Low Pressure Fuel System Sensor Circuit High?

- Common symptoms include poor engine performance, reduced fuel efficiency, and potentially a check engine light illuminated on the dashboard.

2. What are the possible causes of OBDII code P2542 in an Acura?

- The code P2542 in an Acura is often caused by a faulty low-pressure fuel sensor, wiring issues in the fuel sensor circuit, or a problem with the engine control module (ECM).

3. How can I diagnose the OBDII code P2542 in my Acura?

- Diagnosing code P2542 involves using a diagnostic scanner to retrieve the code, checking the low-pressure fuel sensor and its wiring for any visible damage or corrosion, and testing the sensor's resistance.

4. What should I do if my Acura shows OBDII code P2542 related to the Low Pressure Fuel System Sensor Circuit High?

- It is recommended to have the vehicle inspected by a qualified mechanic to accurately diagnose the issue and determine the appropriate repairs needed.

5. Can I continue driving my Acura with the OBDII code P2542 present?

- It is not recommended to drive the vehicle with code P2542 present, as it can lead to further damage to the fuel system and potentially affect the engine's performance.

6. How much does it typically cost to repair OBDII code P2542 in an Acura?

- The cost of repairing code P2542 can vary depending on the specific cause of the issue, but it may range from $100 to $500, including parts and labor.

7. Are there any DIY fixes for OBDII code P2542 in an Acura?

- DIY fixes for code P2542 are limited, as it often requires specialized diagnostic equipment and expertise to properly diagnose and repair the issue.

8. Can a faulty low-pressure fuel sensor cause other problems in my Acura besides triggering code P2542?

- Yes, a faulty low-pressure fuel sensor can lead to poor fuel efficiency, rough idling, and potential stalling of the engine in addition to triggering the specific code P2542.

9. How long does it typically take to repair OBDII code P2542 in an Acura?

- The repair time for code P2542 can vary depending on the exact cause of the issue and the availability of parts, but it may take a few hours to a day to complete the repair.

10. Is it necessary to reset the OBDII system after repairing code P2542 in an Acura?

- Yes, it is recommended to reset the OBDII system after repairing code P2542 to clear the fault code and ensure that the issue has been successfully addressed.