This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.
A P1495 trouble code is defined as VAP Leak Detection Pump Solenoid Circuit Condition.
The evaporative emissions system in a vehicle is designed to prevent fuel vapors from escaping the fuel system. Leaks can allow vapors to escape from the system, and spill out into the atmosphere. The leak detection system tests for EVAP leaks and blockages in the system.
During the self-diagnostics process, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LDP to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the PCM will continue pumping the LDP to replace the air that leaks out. The PCM determines the size of the leak based on how fast/long it must pump the LDP as it tries to maintain pressure in the system.
There are some primary issues that can happen with a vehicle that can cause this trouble code to appear on your OBD II scanner:
- Faulty Leak Detection Pump (LDP).
- The harness on the Leak Detection Pump (LDP) is open or shorted.
- The Leak Detection Pump (LDP) has a poor electrical connection.
Any of these issues can cause a P1495 code to display on your scanner.
There are several symptoms that you will notice with a vehicle that is experiencing a P1495 trouble code. The Service Engine or Check Light Light will be ON (or Service Engine Soon Warning Light). It is also possible that you will find a noticeable fuel odor coming from the vehicle. This is caused by the release or leak of the fuel vapors.
Malfunction is detected when the Powertrain Control Module (PCM) detected the pump solenoid did not change status when activated
A P1495 is fairly straightforward when it comes to spotting the causes, identifying the symptoms, diagnosing the problem, and then fixing it. Therefore, there are little to no mistakes that mechanics will make when diagnosing and fixing this code.
How serious is this?
A P1495 trouble code is fairly serious. This code that signifies that vapors are leaking from the vehicle is not only bad for the condition of the vehicle, but for the environment as well. Keep in mind that this trouble code is specific to certain makes and models of vehicles. This code will populate for some manufacturers but may be different for others.
What repairs can fix the code?
There are a few different repairs that will help you fix and correct this trouble code. Keep in mind that if you stick to the following steps, you should have little to no trouble in fixing this code and repairing the vehicle.
- Repairs for this code are pretty simple, but of course, require a thorough diagnosis.
- Repair or replace broken or loose electrical wirings.
- Repair or replace tears or disconnects in vacuum lines.
- Replace LDP.
This error code is a manufacturer-specific trouble code. This means it does not apply to all vehicle makes and manufacturers. Conversely, it applies only to specific vehicle makes, such as Chrysler, Dodge, and Jeep. Specification on the definition, troubleshooting, and repairs will vary from one make or model to another. That can make this code tricky to address, but if you stick to this guide, you should have no trouble in fixing this code.