P0459 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0459 2014 Chevrolet Silverado?
- 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 2014 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0459 2014 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.
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Frequently Asked Questions about P0459 2014 Chevrolet Silverado Code
1. What does the OBDII code P0459 mean on a 2014 Chevrolet Silverado?
P0459 indicates a high voltage issue in the Evaporative Emission Purge Solenoid Valve Control Circuit, suggesting a potential electrical malfunction.
2. What are the common symptoms of code P0459 in a 2014 Silverado?
Symptoms may include the check engine light turning on, difficulty starting the engine, poor fuel economy, or a fuel smell near the vehicle.
3. What causes the P0459 code in a 2014 Chevrolet Silverado?
Common causes include a faulty purge solenoid valve, damaged wiring or connectors in the circuit, or a malfunctioning ECM (engine control module).
4. Can I drive my 2014 Silverado with the P0459 code?
While it may be possible to drive with this code, it’s not recommended as it can impact emissions performance and potentially lead to further damage.
5. How do I diagnose the P0459 code on a 2014 Chevrolet Silverado?
Start by checking the purge solenoid valve for proper operation, inspect wiring and connectors for damage, and test the circuit voltage and resistance with a multimeter.
6. How do I fix code P0459 in my 2014 Silverado?
Repairs may involve replacing the purge solenoid valve, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
7. How much does it cost to fix a P0459 code on a 2014 Silverado?
Costs vary but typically range from $50 to $200 for parts and labor, depending on whether the purge solenoid valve or wiring needs replacement.
8. Can a bad gas cap cause the P0459 code in a 2014 Silverado?
While a loose or damaged gas cap can cause other EVAP-related codes, it’s unlikely to directly cause a P0459 code.
9. How does the purge solenoid valve work in a 2014 Chevrolet Silverado?
The purge solenoid valve controls the flow of fuel vapors from the EVAP system to the engine for combustion, reducing emissions.
10. Will clearing the P0459 code with a scanner fix the problem?
Clearing the code will turn off the check engine light temporarily, but the issue will return unless the underlying cause is properly repaired.
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