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Error Code P1495 is defined as VAP Leak Detection Pump Solenoid Circuit Condition. This code pertains to a fault in the Leak Detection Pump.
This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as Chrysler, Dodge, and Jeep. Specification on the definition, troubleshooting, and repairs still vary from one make and model to another.
The EVAP (Evaporative Emission System) is designed to prevent fuel vapors from escaping the fuel system. Leaks in this part of the vehicle will allow fuel vapors to escape into the atmosphere. It is the job of the Leak Detection System test to look for EVAP system blockages and leaks.
Error Code P1495 refers to a problem in the vehicle’s leak detection pump, which is part of the emission system. This code is detected when the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) determines that the solenoid did not change status when activated. Most often than not, this code appears when there is a bad leak detection pump.
As with other error codes, this code activates the Check Engine light and registers to the vehicle’s system. One of the most noticeable symptoms is fuel odor caused by the release of fuel vapors.
There are a couple of factors that cause this error code, some of the common causes are:
- Faulty LDP (leak detection pump)
- Open or shorted harness in LDP
- Poor electrical connection in LDP circuit
Other possible causes for this error include:
- Open fused ignition switch output
- Intermittent fault in LDP wiring harness
- Defects in wiring and connectors
- Defective PCM
How to Check
The first thing you need to check for this error code is the electrical wires; check for broken or loose electrical wirings.
Then, check the vacuum lines for signs of tears or disconnects. If this all checks, then there’s a good chance the fault is caused by a defective Leak Detection Pump (LDP). This pump is located under the vehicle, towards the left side.
How to Fix
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
Most of the time, replacing the LDP can fix this error code.