Guide To P2028 OBD Error Code Solutions

Let’s understand what exactly caused this code to set. The PCM has the responsibility of monitoring the NVLD module input. The reason for monitoring it is to be able to pick up the ambient temperature sensor values expected by the NVLD. If the PCM notices that these values are not in as they’re meant to be as per the limits prescribed by the manufacturer the P2028 code will be set. In certain vehicles the Fuel Tank Temperature sensor also monitors the temperature of the fuel present in the tank, knowing this temperature is important for the engines health to be monitored.

What causes this problem with the Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit Intermittent?

• Problem in the EVAP sensor
• Blockage or leak present within system
• EVAP fuel vapor temperature sensor wiring harnesses is either damaged or broken
• Short Wires and other electric circuits
• Excessive resistance present in circuits
• Problem with the Pin/connector like corrosion, melting, burning, bending etc.
• Faulty ECM (Engine Control Module)

1. Powertrain Control Module - It is a crucial part of your vehicle responsible for controlling the functioning of all other components. Immediately repair or replace the problems to steer away from further damage and get rid of P2028 code. You can find the one compatible with your vehicle make and model on PartsAvatar also, avail free shipping on orders above CAD $99.
2. Evaporative Emission Control System (EVAP) - Used to prevent harmful gasoline vapors to be let out into the atmosphere. Replace the EVAP and rid of the P2028 code. Find replacement at PartsAvatar Canada. Order online easily and receive your delivery at your doorstep!
3. Fuel Vapor Temperature Sensor - Has the job of monitoring fuel vapor temperature in the charcoal canister or fuel tank. Resolved the problem diagnosed through repairs or replacement.
4. Engine Control Module - This is the CPU of your vehicle. Problems ignored with it can damage the whole engine, so never take this lightly and ensure repairs are done or it is replaced. You can find the perfect ECM for your car on PartsAvatar. Order online today and get rid of P2028 code. ECM replacement will require some programming, you may have to source help from a trained diagnostician for this.
5. Fuel Tank Temperature Sensor - Give the Engine Control Unit information so that it can adjust the amount of fuel it injects, based on the temperature of the fuel. If this sensor is not operating efficiently the wrong amount of fuel will be injected. Repair or replace it as needed and you may be able to get rid of this P2028 OBD-II error code.
6. Purge Control Valve Solenoid - The amount of fuel vapor that is purged from the charcoal canister is controlled by this solenoid and it is part of the EVAP system. If it is showing some faults, try to repair and see if the P2028 code goes away, otherwise functioning properly or go for replacement with us.
7. Charcoal Canister - Performs the job of soaking the fuel vapor that would put to the atmosphere, which would then cause air pollution. You can repair or replace it s needed to resolve the P2028 code.
8. Emission Control System - Reduces the discharge of noxious gases from the internal-combustion engine and other parts. Any issues found should be repaired. A bad emission control system can cause extensive damage to the engine and other components too.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P2028 here:

Common Symptoms

• Not passing the state/provincial emission test
• Fuel is having a foul smell which is unusual
• Decreased fuel economy noticed
• The Check Engine light is illuminated on your vehicle
• Fuel filling is showing problematic symptoms

It is very important to fix the fault code P2028. So here are some ways with which you can correct this issue:

• The EVAP system needs repair or replace
• The Purge Control Valve requires repair or replace
• The Purge Control Solenoid has to be repaired or replaced
• The issue with the Charcoal canister needs to be resolved by repair or replace
• Repair or replace the Powertrain Control Module

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade PCM, EVAP, Fuel Vapor Temperature Sensor, ECM, Fuel Tank Temperature Sensor, Purge Control Solenoid, Purge Control Valve, Charcoal Canister, Emission Control System and a lot more for our precious customers.

You have to have the right information to be able to resolve the P2028 code, here are some steps we have put together that will help you get rid of this OBD-II code:

1. Connect your OBD scanner to the vehicle’s diagnostic port and retrieve all the codes. Remember to freeze frame the data. Any codes present prior to the P2028 will have to be resolved first, as they could’ve been the reason this OBD code was set in the first place. Next it’s time to reset the trouble codes, and test-drive the vehicle to see if the code returns. If it does, then you will have to continue the diagnosis, if not then there may be an intermittent condition.
2. You can now begin the diagnosis starting with a thorough visual inspection of all the electrical components for damages. You may find blown fuses, burned or corroded connectors, bent pins, short wires etc. Make sure you also check the vacuum lines and hoses for any blockages, or damages. Repair or replace everything as needed.
3. It’s now time to focus on the EVAP system. Be thorough and see if all the related components are free of obstruction and no visible damages like cracks are present. You can also check the pressure differences by locating where the EVAP gets fresh atmospheric air to introduce into its system. You may find most of these parts under the vehicle. Be careful while disconnecting and handling the hoses and pipes of the EVAP system. Any mishandling can cause for damages that may require further replacements and repairs. You can now proceed to test the sensor, refer your vehicles Technical Service Bulletin to find out the specific pinout test to be performed in order to perform the functionality of the EVAP sensor.

Common Mistakes When Diagnosing the P2028 Code

• Fuel tank temperature sensor is Non-functional
• A Engine Control Module (ECM) malfunction
• Wiring is having issues