AutoCodes – Mazda – P0345 Mazda

P0345 Mazda Code - Camshaft Position Sensor Circuit Malfunction

Quick Answer

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection. 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
P0345 Mazda indicates Camshaft Position Sensor Circuit Malfunction .
Common causes
Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection.
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 12,797
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P0345 Mazda Description

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Engine Control Module(ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.
When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing timing of cylinder identification signals.
OBDII Code P0345 Mazda - Camshaft Position Sensor Circuit Malfunction  - AutoCodes.com
P0345 Mazda Code - Camshaft Position Sensor Circuit Malfunction

What are the Possible Causes of the DTC P0345 Mazda?

  • Faulty Camshaft Position Sensor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection
  • Faulty starter motor
  • Starting system circuit
  • Dead (Weak) battery

How to Fix the DTC P0345 Mazda?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0345 Mazda 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 P0345 Mazda code?

Need more information on how to fix the P0345 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0345 Mazda 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 P0345 Mazda Code

1. What are the common symptoms of OBDII code P0345 in a Mazda related to a camshaft position sensor circuit malfunction?

The common symptoms include rough idling, engine misfires, difficulty starting the vehicle, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0345 in a Mazda?

The code P0345 can be triggered by a faulty camshaft position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning PCM (powertrain control module).

3. How can I diagnose the camshaft position sensor circuit malfunction in my Mazda when OBDII code P0345 is present?

To diagnose the issue, you can visually inspect the wiring and connectors for any damage, test the camshaft position sensor for proper functioning, and check for any corrosion or loose connections.

4. Can I drive my Mazda with OBDII code P0345 present?

It is not recommended to drive your Mazda with the code P0345 present as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

5. How can I repair the camshaft position sensor circuit malfunction causing OBDII code P0345 in my Mazda?

The repair may involve replacing the camshaft position sensor, repairing or replacing damaged wiring or connectors, or reprogramming the PCM if necessary.

6. Is it possible for a dirty camshaft position sensor to trigger OBDII code P0345 in a Mazda?

Yes, a dirty or contaminated camshaft position sensor can cause incorrect readings and trigger the code P0345. Cleaning or replacing the sensor may be necessary.

7. Will resetting the OBDII code P0345 in my Mazda make the issue go away permanently?

Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the code is not addressed, it is likely to reoccur. It is essential to diagnose and repair the problem.

8. Can a malfunctioning camshaft position sensor affect the performance of my Mazda besides triggering OBDII code P0345?

Yes, a malfunctioning camshaft position sensor can impact the timing of fuel injection and ignition, leading to poor engine performance, reduced power, and potential stalling of the vehicle.

9. How long does it typically take to repair the camshaft position sensor circuit malfunction causing OBDII code P0345 in a Mazda?

The repair time can vary depending on the extent of the issue and the availability of parts. It can take anywhere from 1 to 3 hours to diagnose and repair the problem.

10. Are there any preventive maintenance tips to avoid OBDII code P0345 related to a camshaft position sensor circuit malfunction in my Mazda?

Regularly inspecting and cleaning the camshaft position sensor, checking the wiring for any signs of damage, and addressing any engine performance issues promptly can help prevent the occurrence of the code P0345.

Discuss the causes and fixes for P0345 Mazda OBDII Code

Code P0345 Mazda comments

No comments found for this page.

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