Engine-CodesAcura – P0340 Acura

P0340 Acura Code - Camshaft Position Sensor 'A' No Signal

Quick Answer

The P0340 code for Acura vehicles indicates that the Camshaft Position Sensor 'A' is not sending a signal to the Engine Control Module (ECM). Common causes include Faulty camshaft position sensor, Wiring or connector issues in the camshaft position sensor circuit, Engine timing belt or chain issues. 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
P0340 Acura indicates Camshaft Position Sensor 'A' No Signal.
Common causes
Common causes include Faulty camshaft position sensor, Wiring or connector issues in the camshaft position sensor circuit, Engine timing belt or chain issues.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0340 Acura Description

The P0340 code for Acura vehicles indicates that the Camshaft Position Sensor 'A' is not sending a signal to the Engine Control Module (ECM). The camshaft position sensor plays a crucial role in the engine's operation by monitoring the position of the camshaft and sending this information to the ECM. This data is essential for the ECM to determine the correct timing of fuel injection and ignition.

OBDII Code P0340 Acura - Camshaft Position Sensor 'A' No Signal
P0340 Acura Code - Camshaft Position Sensor 'A' No Signal

Common Causes of P0340 Acura

  1. Faulty camshaft position sensor
  2. Wiring or connector issues in the camshaft position sensor circuit
  3. Engine timing belt or chain issues
  4. ECM software malfunction
  5. Mechanical engine problem affecting camshaft position

Symptoms of P0340 Acura

  1. Engine misfires or runs rough
  2. Decreased fuel efficiency
  3. Engine stalls or struggles to start
  4. Check Engine Light illuminated
  5. Loss of power or acceleration

How to Fix P0340 Acura

  1. Diagnose the issue by using a scan tool to confirm the P0340 code and inspecting the camshaft position sensor and related components.
  2. Replace the faulty camshaft position sensor with a new one that meets the manufacturer's specifications.
  3. Check the wiring and connectors for any damage or corrosion, repairing or replacing them as needed.
  4. Verify the engine timing belt or chain is properly aligned and functioning correctly.
  5. Clear the code from the ECM and perform a test drive to ensure the issue is resolved.

Cost to Fix P0340 Acura

The cost of repairing a P0340 code on an Acura vehicle can vary depending on the specific model and year. In general, the replacement camshaft position sensor and related parts may cost between $50 to $200. Labor costs can range from $100 to $300, with total repair costs typically falling between $150 to $500. It's important to note that these estimates are rough averages, and actual costs can differ based on the location and labor rates of the auto repair shop. It's recommended to obtain quotes from multiple shops to find the best price for the repair.

Tech Notes for P0340 Acura









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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 P0340 Acura Code

1. What are the common symptoms of OBDII code P0340 in an Acura vehicle?

The common symptoms of OBDII code P0340 in an Acura include engine misfires, rough idling, stalling, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P0340 in an Acura?

The possible causes of OBDII code P0340 in an Acura include a faulty camshaft position sensor, wiring issues, sensor connection problems, or a malfunctioning engine control module (ECM).

3. How can I diagnose the camshaft position sensor 'A' no signal issue in my Acura?

To diagnose the camshaft position sensor 'A' no signal issue in your Acura, you can use a scan tool to check for OBDII codes, visually inspect the sensor and its wiring for any damage, and perform a voltage test on the sensor.

4. Is it safe to continue driving my Acura with OBDII code P0340?

It is not recommended to continue driving your Acura with OBDII code P0340, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

5. Can I replace the camshaft position sensor in my Acura myself?

Replacing the camshaft position sensor in your Acura can be a relatively straightforward task for those with some automotive experience. However, if you are unsure, it is recommended to seek professional help to ensure proper installation.

6. Are there any simple repair tips for fixing OBDII code P0340 in my Acura?

Simple repair tips for fixing OBDII code P0340 in your Acura include checking and cleaning the sensor connections, inspecting the sensor's wiring for any breaks or corrosion, and ensuring the sensor is properly aligned.

7. How much does it typically cost to repair OBDII code P0340 in an Acura?

The cost of repairing OBDII code P0340 in an Acura can vary depending on the cause of the issue, the labor rates in your area, and whether you choose to do the repair yourself or take it to a professional mechanic.

8. Will resetting the OBDII code P0340 in my Acura solve the issue temporarily?

Resetting the OBDII code P0340 in your Acura may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return. It is important to diagnose and fix the root cause of the problem.

9. Can a faulty camshaft position sensor affect the performance of my Acura?

Yes, a faulty camshaft position sensor can significantly impact the performance of your Acura, leading to poor engine operation, reduced fuel efficiency, and potential drivability issues.

10. How long does it take to repair OBDII code P0340 in an Acura?

The repair time for OBDII code P0340 in an Acura can vary depending on the complexity of the issue, the availability of parts, and the expertise of the person performing the repair. In general, it can take anywhere from a few hours to a full day to address the problem.

Discuss the causes and fixes for P0340 Acura OBDII Code

  • Hello ,, I have a 2002 Honda civic 1.7L I keep getting code P0340 & P0341
    I changed the camshaft sensor & crankshaft sensor while i was in there,,, But still after driving
    45 minutes and only after more then 1/2 throttle the car acts up.. I also changed the PGM-FI relay
    because get was getting super HOT... Once it start to act up ,, if I dont pull over and turn the car off
    for 10 to 15 get want get me HOME.. I think the RELAY getting SUPER HOT is the real PROBLEM..
    PLEASE HELP..

  • When was the last time you change the timing belt? according to a national database of repairs, if the sensor won't fix the problem, then you may have a stretched timing belt.

  • Hello Thanks for getting back to me.. So the Timing belt was replaced 30,000 miles ago..I can't over state when it acts up when the main relay gets super Hot .. Once the relay cools down it runs great again ..If it was the belt ,,
    would't it acted up all the time ?