P0340 2017 GMC Sierra 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 GMC Sierra 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.
Code P0340 2017 GMC Sierra Description
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.
What are the Possible Causes of the DTC P0340 2017 GMC Sierra?
- 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 GMC Sierra?
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 GMC Sierra 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 GMC Sierra code?
Need more information on how to fix the P0340 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0340 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0340 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code P0340 in a 2017 GMC Sierra?
- Common symptoms include engine misfires, rough idling, stalling, poor acceleration, and possibly difficulty starting the vehicle.
2. What is the primary cause of OBDII code P0340 in a 2017 GMC Sierra?
- The primary cause of P0340 is a faulty camshaft position sensor or an issue with the sensor circuit, such as wiring problems or connector issues.
3. How can I diagnose the cause of OBDII code P0340 in my 2017 GMC Sierra?
- You can use a diagnostic scanner to read the code, inspect the camshaft position sensor and its wiring for damage, and perform voltage tests to identify the issue.
4. Can a dirty camshaft position sensor trigger OBDII code P0340 in a 2017 GMC Sierra?
- Yes, a dirty or contaminated camshaft position sensor can lead to erratic readings and trigger the P0340 code.
5. What are some repair tips for fixing OBDII code P0340 in a 2017 GMC Sierra?
- Repair tips include cleaning the camshaft position sensor, replacing the sensor if it is faulty, checking and repairing any damaged wiring, and ensuring proper sensor alignment.
6. Will driving with OBDII code P0340 in a 2017 GMC Sierra cause further damage?
- Continuing to drive with P0340 may lead to more severe issues over time, such as engine performance problems or potential damage to other components.
7. Is it safe to reset the OBDII code P0340 in a 2017 GMC Sierra without fixing the underlying issue?
- It is not recommended to simply reset the code without addressing the root cause, as the problem may persist and potentially worsen over time.
8. Can a DIY enthusiast replace the camshaft position sensor to resolve OBDII code P0340 in a 2017 GMC Sierra?
- Yes, replacing the camshaft position sensor can be a DIY-friendly task with the right tools and knowledge, but proper diagnostics should be done to confirm the sensor is the issue.
9. Are there any recalls or technical service bulletins related to OBDII code P0340 in a 2017 GMC Sierra?
- It is advisable to check with the manufacturer or a GMC dealership for any recalls or technical service bulletins related to the P0340 code in your specific model year.
10. What is the typical cost range for repairing OBDII code P0340 in a 2017 GMC Sierra at a professional auto repair shop?
- The cost of repairing P0340 can vary depending on the exact cause, but it may range from $100 to $300 for parts and labor at a professional auto repair shop.
Discuss the causes and fixes for P0340 2017 GMC Sierra OBDII Code
Code P0340 2017 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
