Engine-CodesHonda – P0340 Honda

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

Quick Answer

When a vehicle's Engine Control Module (ECM) detects that the camshaft position sensor 'A' is not sending a signal, it triggers diagnostic trouble code P0340 in Honda vehicles. Common causes include Faulty camshaft position sensor, Wiring or connector issues, Damaged reluctor ring. 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 Honda indicates Camshaft Position Sensor 'A' No Signal.
Common causes
Common causes include Faulty camshaft position sensor, Wiring or connector issues, Damaged reluctor ring.
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 06, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0340 Honda Description

When a vehicle's Engine Control Module (ECM) detects that the camshaft position sensor 'A' is not sending a signal, it triggers diagnostic trouble code P0340 in Honda vehicles. 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. Without this data, the ECM cannot accurately control ignition timing and fuel injection, leading to potential engine performance issues.

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

Common Causes of P0340 Honda

  1. Faulty camshaft position sensor
  2. Wiring or connector issues
  3. Damaged reluctor ring
  4. Timing belt or chain problems
  5. Malfunctioning ECM

Symptoms of P0340 Honda

  1. Engine misfires
  2. Poor acceleration
  3. Check Engine Light illuminated
  4. Engine stalling
  5. Rough idling

How to Fix P0340 Honda

  1. Perform a thorough diagnostic to identify the specific cause of the issue.
  2. Replace the faulty camshaft position sensor.
  3. Check and repair any damaged wiring or connectors.
  4. Inspect and, if necessary, replace the reluctor ring.
  5. Reset the ECM and clear the trouble code.

Cost to Fix P0340 Honda

The cost of repairing a camshaft position sensor 'A' no signal issue in a Honda vehicle can vary depending on the specific model and year of the vehicle. Typically, the cost of a new camshaft position sensor ranges from $50 to $150, not including labor costs. The total repair cost, including parts and labor, can range from $150 to $400. It is advisable to consult with a trusted auto repair shop for a more accurate estimate based on the specific circumstances. Labor rates can vary, so it is recommended to inquire about local rates before proceeding with the repair.

Tech Notes for P0340 Honda





User Submitted Video

Need more information about the P0340 Honda code?

Need more information on how to fix the P0340 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0340 Honda code diagnosed by a professional: Find a repair shop in your area

Information for Specific Honda Models

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 Honda Code

What are the common symptoms of OBDII code P0340 in a Honda related to the Camshaft Position Sensor 'A' No Signal?

Symptoms of P0340 in a Honda may include rough idling, engine stalling, poor acceleration, and difficulty starting the vehicle.

What are the common causes of OBDII code P0340 in a Honda related to the Camshaft Position Sensor 'A' No Signal?

Common causes of P0340 in a Honda include a faulty camshaft position sensor, wiring issues, sensor connection problems, or a damaged sensor.

How can I diagnose the issue when encountering OBDII code P0340 in a Honda related to the Camshaft Position Sensor 'A' No Signal?

To diagnose P0340, you can use an OBDII scanner to check the code, visually inspect the sensor and wiring, test the sensor's voltage, and perform a continuity test on the wiring.

What are some repair tips for fixing OBDII code P0340 in a Honda related to the Camshaft Position Sensor 'A' No Signal?

Repair tips for P0340 include replacing the camshaft position sensor, repairing any damaged wiring, ensuring proper sensor connections, and clearing the trouble code after repairs.

Can OBDII code P0340 in a Honda related to the Camshaft Position Sensor 'A' No Signal cause engine damage?

Continuously driving with P0340 may lead to poor engine performance, decreased fuel efficiency, and potential damage if left unresolved for an extended period. It's recommended to address the issue promptly.

Can I still drive my Honda with OBDII code P0340 related to the Camshaft Position Sensor 'A' No Signal?

While it's possible to drive with P0340, it's not recommended as it may lead to further damage and potential safety risks. It's best to address the issue as soon as possible.

Are there any preventive measures I can take to avoid OBDII code P0340 in a Honda related to the Camshaft Position Sensor 'A' No Signal?

Regular maintenance, such as checking and replacing sensors at recommended intervals, inspecting wiring for damage, and addressing any engine performance issues promptly, can help prevent P0340 from occurring.

How long does it typically take to repair OBDII code P0340 in a Honda related to the Camshaft Position Sensor 'A' No Signal?

The repair time for P0340 can vary depending on the extent of the issue and your experience level. It may take anywhere from 1-3 hours for diagnosis and repair.

Discuss the causes and fixes for P0340 Honda OBDII Code

  • I have changed the Camshaft Position Sensor and still get the Code P0340 Code..Battery is new,all connections are intack..Any suggestions????? 

  • What model and year is your Honda?

  • changed the crank shaft sensor in 1998 honda crv and the engine check light still come on,the battery is brand new what could be the problem

  • 1998 honda crv

  • What code did you get? the P0340 code is for the Camshaft Position Sensor and not the Crankshaft Position Sensor