AutoCodes – Chevrolet – P0340 2017 Chevrolet Silverado

P0340 2017 Chevrolet Silverado Code - Camshaft Position Sensor Circuit

Quick Answer

The Camshaft Position Sensor detects magnetic flux changes between the four narrow and wide tooth slots on the reluctor wheel. 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
P0340 2017 Chevrolet Silverado indicates Camshaft Position Sensor Circuit.
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.
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Code Popularity 987
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 26, 2022
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Code P0340 2017 Chevrolet Silverado Description

The Camshaft Position Sensor detects magnetic flux changes between the four narrow and wide tooth slots on the reluctor wheel. The Camshaft Position Sensor provides a digital ON/OFF DC voltage of varying frequency for each camshaft revolution. The Engine Control Module (ECM) will recognize the narrow and wide tooth patterns to identify the camshaft position, or which cylinder is in compression, and which is in the exhaust. The information is then used to determine the correct time and sequence for fuel injection and ignition spark events.
The ECM also has a dedicated replicated Camshaft Position Sensor signal output circuit that may be used as an input signal to other modules for monitoring engine RPM.
The Diagnostic Trouble Code (DTC) will be set when the ECM does not receive a signal from the Camshaft Position Sensor during 200 engine revolutions.
OBDII Code P0340 2017 Chevrolet Silverado - Camshaft Position Sensor Circuit - AutoCodes.com
P0340 2017 Chevrolet Silverado Code - Camshaft Position Sensor Circuit

What are the Possible Causes of the DTC P0340 2017 Chevrolet Silverado?

  • 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 P0340 2017 Chevrolet Silverado?

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 P0340 2017 Chevrolet Silverado 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 P0340 2017 Chevrolet Silverado code?

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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 2017 Chevrolet Silverado Code

1. What does OBDII code P0340 on a 2017 Chevrolet Silverado indicate?

The code P0340 in a 2017 Chevrolet Silverado refers to a malfunction in the Camshaft Position Sensor Circuit.

2. What are common symptoms of a P0340 code in a 2017 Chevrolet Silverado?

Common symptoms of a P0340 code include engine misfires, rough idling, stalling, and difficulty starting the vehicle.

3. What are possible causes of a P0340 code in a 2017 Chevrolet Silverado?

Potential causes of a P0340 code include a faulty camshaft position sensor, damaged wiring or connectors in the sensor circuit, or issues with the timing belt or chain.

4. How can I diagnose a P0340 code in a 2017 Chevrolet Silverado?

Diagnosing a P0340 code involves checking the camshaft position sensor for proper operation, inspecting the sensor wiring and connectors for damage, and verifying the timing belt or chain alignment.

5. Can a P0340 code be repaired at home?

Depending on your skill level, you may be able to replace the camshaft position sensor or repair wiring issues causing the P0340 code at home. However, complex timing belt or chain problems may require professional assistance.

6. Is it safe to continue driving with a P0340 code in a 2017 Chevrolet Silverado?

Continuing to drive with a P0340 code can lead to further engine damage and potential safety hazards. It's recommended to address the issue promptly to avoid more significant problems.

7. How much does it typically cost to repair a P0340 code in a 2017 Chevrolet Silverado?

The cost of repairing a P0340 code can vary depending on the exact cause of the issue. Replacing the camshaft position sensor may cost around $100-$200, while addressing timing belt or chain problems can be more expensive.

8. Can a P0340 code be triggered by other underlying issues?

Yes, other engine problems such as low oil pressure, faulty crankshaft position sensor, or issues with the engine control module (ECM) can sometimes trigger a P0340 code in a 2017 Chevrolet Silverado.

9. Will resetting the OBDII system clear a P0340 code in a 2017 Chevrolet Silverado?

Resetting the OBDII system may temporarily clear the P0340 code, but if the underlying issue is not addressed, the code is likely to reappear after some driving cycles.

10. How can I prevent a P0340 code from recurring in my 2017 Chevrolet Silverado?

To prevent a P0340 code from recurring, perform regular maintenance on your vehicle, including timely replacement of the camshaft position sensor, checking the sensor wiring for damage, and ensuring proper timing belt or chain function.

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