P0459 2014 GMC Sierra Code - Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
Quick Answer
The P0459 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the evaporative emission purge solenoid valve control circuit registering high voltage. Common causes include Faulty evaporative emission purge solenoid valve, Wiring issues in the control circuit, Corrosion or poor connections in the electrical system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0459 2014 GMC Sierra indicates Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage.
- Common causes
- Common causes include Faulty evaporative emission purge solenoid valve, Wiring issues in the control circuit, Corrosion or poor connections in the electrical system.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code P0459 2014 GMC Sierra Description
The P0459 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the evaporative emission purge solenoid valve control circuit registering high voltage. The evaporative emission system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The purge solenoid valve controls the flow of fuel vapors from the charcoal canister to the engine intake manifold for combustion.
Common Causes of P0459 2014 GMC Sierra
- Faulty evaporative emission purge solenoid valve
- Wiring issues in the control circuit
- Corrosion or poor connections in the electrical system
- PCM (Powertrain Control Module) failure
- Vacuum leaks in the evaporative emission system
Symptoms of P0459 2014 GMC Sierra
- Check engine light illuminated
- Decreased fuel efficiency
- Rough idling or stalling
- Strong fuel odor
- Failed emissions test
How to Fix P0459 2014 GMC Sierra
- Diagnose the issue using a scan tool to confirm the P0459 code and pinpoint the exact cause of the problem.
- Inspect the wiring and connections related to the evaporative emission purge solenoid valve for any damage or corrosion.
- Test the purge solenoid valve for proper operation and replace it if necessary.
- Clear the DTC and reset the check engine light after completing the repair.
- Perform a final test drive to ensure the issue has been resolved and the code does not reappear.
Cost to Fix P0459 2014 GMC Sierra
The typical repair costs for addressing a P0459 code on a 2014 GMC Sierra can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and engine type can also influence the final repair costs. For a more accurate estimate, it is recommended to consult with a local auto repair shop.
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