P0459 GMC Code - Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
Quick Answer
The Evaporative Emission (EVAP) Purge Solenoid Valve is used to purge fuel vapor from the EVAP canister to the intake manifold. Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Valve, Evaporative Emission Purge Solenoid Valve harness is open or shorted, Evaporative Emission Purge Solenoid Valve circuit poor electrical connection. 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 GMC indicates Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage.
- Common causes
- Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Valve, Evaporative Emission Purge Solenoid Valve harness is open or shorted, Evaporative Emission Purge Solenoid Valve circuit poor electrical connection.
- 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.
Code P0459 GMC Description
What are the Possible Causes of the DTC P0459 GMC?
- Faulty Evaporative Emission (EVAP) Purge Solenoid Valve
- Evaporative Emission Purge Solenoid Valve harness is open or shorted
- Evaporative Emission Purge Solenoid Valve circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0459 GMC?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0459 GMC 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.
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Information for Specific GMC Models
- P0459 2014 GMC Sierra — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
- P0459 2015 GMC Sierra — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
- P0459 2016 GMC Sierra — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
- P0459 2017 GMC Sierra — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
- P0459 2018 GMC Sierra — Evaporative Emission Purge Solenoid Valve Control Circuit High Voltage
Frequently Asked Questions about P0459 GMC Code
1. What are the common symptoms of OBDII code P0459 in a GMC vehicle?
- Common symptoms include the check engine light illuminating, rough idling, decreased fuel efficiency, and potential difficulty starting the engine.
2. What can cause the OBDII code P0459 to trigger in a GMC car?
- The code P0459 is typically triggered by a malfunction in the evaporative emission purge solenoid valve control circuit, often caused by wiring issues, a faulty solenoid valve, or a problem with the vehicle's computer system.
3. How serious is the OBDII code P0459 in a GMC truck?
- While the code itself may not cause immediate harm to the vehicle, it is important to address it promptly to prevent potential damage to the emissions control system and ensure optimal engine performance.
4. Can I continue driving my GMC vehicle with the OBDII code P0459 present?
- It is generally not recommended to drive the vehicle with the code active, as it may lead to increased emissions, reduced fuel economy, and can potentially cause further damage to the engine over time.
5. How can I diagnose and repair the OBDII code P0459 in my GMC SUV?
- Diagnosis involves checking the wiring, connections, and the evaporative emission purge solenoid valve itself. Repair may involve fixing wiring issues, replacing the solenoid valve, or reprogramming the vehicle's computer system.
6. Will resetting the check engine light resolve the OBDII code P0459 in my GMC pickup truck?
- Simply resetting the check engine light may temporarily turn it off, but the underlying issue causing the code will likely persist. It is crucial to diagnose and address the root cause of the problem.
7. Are there any DIY tips for troubleshooting the OBDII code P0459 in a GMC vehicle?
- DIY troubleshooting tips include visually inspecting the wiring harness, checking for loose connections, testing the solenoid valve for proper functionality, and ensuring the vehicle's battery is in good condition.
8. How long does it typically take to repair the OBDII code P0459 in a GMC car?
- The repair time can vary depending on the exact cause of the code. Simple fixes like reconnecting a loose wire may take a short time, while replacing a faulty solenoid valve or addressing more complex wiring issues may require more time.
9. Can a faulty gas cap cause the OBDII code P0459 to appear in a GMC vehicle?
- While a faulty gas cap can trigger related codes, such as P0455 (EVAP System Leak Detected), it is less likely to cause the specific code P0459 related to the evaporative emission purge solenoid valve control circuit.
10. How much does it cost to repair the OBDII code P0459 in a GMC vehicle?
- The cost of repairs can vary based on the underlying issue causing the code, the cost of parts needed for the repair, and labor charges. It is advisable to consult with a mechanic or dealership for an accurate estimate.
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