P0445 Code - Evaporative Emission Control System Purge Control Valve Circuit Shorted
Quick Answer
The Evaporative Emission System (EVAP) Canister Purge Volume Control Solenoid Valve controls flow rate of fuel vapor from the EVAP canister. Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control 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
- P0445 indicates Evaporative Emission Control System Purge Control Valve Circuit Shorted.
- Common causes
- Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control 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 P0445 Description
The EVAP canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.
What are the Possible Causes of the DTC P0445?
- Faulty Evaporative Emission (EVAP) Purge Solenoid Control
- Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted
- Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection
How to Fix the DTC P0445?
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 P0445 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 Makes
- P0445 Audi — EVAP System Purge Control Valve Circuit Shorted
- P0445 Buick — Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0445 Cadillac — Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0445 Chevrolet — Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0445 Chrysler — EVAP Purge Solenoid Circuit
- P0445 Dodge — EVAP Purge Solenoid Circuit
- P0445 GMC — Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0445 Hyundai — EVAP System Purge Control Valve Circuit Shorted
- P0445 Infiniti — EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted
- P0445 Jeep — EVAP Purge Solenoid Circuit
- P0445 KIA — EVAP Emission System Purge Control Valve Circuit Shorted
- P0445 Mazda — EVAP Control System Purge Control Valve Circuit Shorted
- P0445 Mercedes-Benz — Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0445 Nissan — EVAP Canister Purge Volume Control Solenoid Valve Circuit Shorted
- P0445 Subaru — Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0445 Volkswagen — EVAP System Purge Control Valve Circuit Shorted
Frequently Asked Questions about P0445 Code
1. What are the common symptoms of OBDII code P0445?
The common symptoms of P0445 include the check engine light illuminating on the dashboard, rough idling, decreased fuel efficiency, and potential difficulty starting the vehicle.
2. What causes the OBDII code P0445 to trigger?
The P0445 code is typically triggered by a short circuit in the evaporative emission control system purge control valve circuit. This can be caused by damaged wiring, a faulty purge control valve, or a malfunctioning PCM.
3. How serious is the OBDII code P0445?
While P0445 may not cause immediate drivability issues, it can negatively impact the vehicle's emissions control system, potentially leading to increased emissions and reduced fuel efficiency. It is still important to address this code promptly.
4. Are there any safety concerns associated with OBDII code P0445?
There are no immediate safety concerns associated with P0445. However, unresolved issues with the evaporative emission control system can lead to increased emissions, which can have long-term environmental impacts.
5. Can I continue driving with OBDII code P0445?
It is generally safe to continue driving with the P0445 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent further damage to the emissions control system.
6. How can I diagnose and repair OBDII code P0445?
Diagnosing P0445 typically involves inspecting the wiring and connections related to the purge control valve circuit, testing the purge control valve for proper operation, and checking the PCM for any faults. Repair usually involves fixing or replacing damaged wiring, replacing the purge control valve if necessary, or addressing any PCM issues.
7. Will resetting the check engine light resolve OBDII code P0445?
Simply resetting the check engine light will not fix the underlying issue causing P0445. The code will likely reappear until the root cause of the problem is identified and repaired.
8. How much does it cost to fix OBDII code P0445?
The cost of fixing P0445 can vary depending on the specific cause of the issue, labor rates in your area, and the cost of any replacement parts needed. It is advisable to consult with a mechanic for an accurate estimate.
9. Can I prevent OBDII code P0445 from occurring?
While some causes of P0445 may be unavoidable, regular maintenance and inspections of the evaporative emission control system can help prevent issues that may trigger this code. Keeping the system clean and well-maintained can also reduce the likelihood of P0445 occurring.
10. Does OBDII code P0445 affect emissions testing?
Yes, having the P0445 code present in your vehicle's system can affect the results of emissions testing. It is recommended to address this code before undergoing emissions testing to ensure compliance with regulations.
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