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2002 Jeep Chrkee V8 Chngd leak detect pump and it getting pwr but engine light stays on and gives code P1495 Should the LDP make noise when ignition turned on or vehicle running? What's my problem?

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  • Jeep Master
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Posted on Oct 12, 2018

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: jeep codes location of unit

Got me a complete manual for 199 jeep factory model and found location of each individual unit in question. Manual gives u possible solution to each code and repair and or replace. As a mechanic myself testing, trouble shooting and repair was not that difficult. Shift solenoid was very difficult to get to. Located under the head lamp passenger side.

Posted on Nov 19, 2008

AaronTech
  • 115 Answers

SOURCE: Check Engine Light code on dodge caravan ec P1495

the leak detection pump pressurizes the evaporative system to check for leaks. the computer has detected there is a fault somewhere in the cicuit (wiring) that operates the pump.

Posted on Jun 26, 2009

  • 8 Answers

SOURCE: 2002 Dodge Durango 4.7L V8 Check Engine Codes

1st try and search for a vaccum leak, due to the fact that these vehicles have had some bad problems with the length of wires and hoses, if there is a vaccum leak in the vehicle somewhere that will trigger other malfunctions in your vehicle. Using a can of starting fluid or Brake cleaner spray lightly spray around our engine til you hear the motor rev-up and the spot you have sprayed will determine where your vaccum leak will be. And then check under your distributor cap for any moisture be sure to take a rag and wipe and residue off. Also check the firing order on your distributor.

Posted on Oct 28, 2009

  • 54 Answers

SOURCE: Getting a check engine light on a 2002 Dodge for P0440

Easy fix? Replace your gas cap.

Posted on Nov 16, 2010

  • 383 Answers

SOURCE: it gives me acode p1495 and check engine light

P0445= Evaporative Emission System Purge Control Valve Circuit Shorted
P1495= Leak detection pump solenoid circuit

both of these codes are just emission codes and are nothing to really worry about if you can live with the engine light being on all the time they won't hurt engine in any way and you won't notice any change in the way the van runs
there really only two reasons to fix this
1. you can't stand engine light being on
2. you live in a state with smog laws that require routine inspections

Posted on Mar 06, 2011

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3.3l engine. What are the probable causes of DTC P1495?


answer courtesy of engine codes .com Engine-Codes OBDII Code List P1495 Dodge
P1495 Dodge P1495 Dodge - EVAP Leak Detection Pump Solenoid Circuit Condition 3 ' Add Comment Possible causes
- Faulty Leak Detection Pump (LDP)
- Leak Detection Pump (LDP) harness is open or shorted
- Leak Detection Pump (LDP) poor electrical connection
What does this mean? When is the code detected?
Malfunction is detected when the Powertrain Control Module (PCM) detected the pump solenoid did not change status when activated,
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
P1495 Dodge Description
The Evaporative emissions system is design to prevent the escape of fuel vapors from the fuel system. Leaks in the system, ca allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.
During the self-diagnostics, 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.

Read more: http://engine-codes.com/p1495_dodge.html#ixzz3iQ8P3JII P1495 Dodge EVAP Leak Detection Pump Solenoid Circuit Condition

Aug 10, 2015 | Dodge Caravan Cars & Trucks

1 Answer

P1495 on 2000 dodge stratus 2.4 l engine how to fix the problem


The code is telling you that you have a problem with the pump.

DTC P1495 - LEAK DETECTION PUMP SOLENOID CIRCUIT
WHEN MONITORED Ignition on and battery voltage greater than 10.4 volts .
SET CONDITION The state of the solenoid circuit does not change.
POSSIBLE CAUSES Fused ignition switch output circuit open
Leak detection pump defective LDP solenoid circuit wiring harness observable def LDP solenoid ckt wiring harness intermittent def LDP solenoid control circuit short to ground Leak detection pump solenoid control circuit open Powertrain control module defective

During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement.



The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.

NOTE: VERIFY ALL RELATED SUPPLY VACUUM LINE ROUTINGS FOR PINCHES, KINKS, OR DISCONNECTION'S BEFORE REPLACING LDP SYSTEM COMPONENTS.




Hope this helps, also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Apr 16, 2012 | Cars & Trucks

1 Answer

2000 dodge stratus p1495 code problem


Check your connections on your leak detection pump and vacuum hose to the engine. You will need a scanner to do a wiggle test on the wiring harness this is a common problem.

The code is telling you that you have a problem with the pump.

DTC P1495 - LEAK DETECTION PUMP SOLENOID CIRCUIT
WHEN MONITORED Ignition on and battery voltage greater than 10.4 volts .
SET CONDITION The state of the solenoid circuit does not change.

POSSIBLE CAUSES: Fused ignition switch output circuit open
Leak detection pump defective LDP solenoid circuit wiring harness observable def LDP solenoid ckt wiring harness intermittent def LDP solenoid control circuit short to ground Leak detection pump solenoid control circuit open Powertrain control module defective

Hope helps.

Apr 16, 2012 | Cars & Trucks

1 Answer

I have a 2002 Grand Cherokee with a P1494 code. Is this serious requiring immediate attention?


Hi, you can drive the car with this code, and there is no safety or drivability issue. The Jeep uses a pump to test the fuel vapor emission control system, and your pump is acting up. So the computer will not be able to test your system for vapor leaks.
Please let me know if you would like troubleshooting procedures to determine the exact problem, and thanks for using FixYa.


Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault
Possible Causes:


LDP switch signal circuit is open or shorted to ground LDP switch power circuit is open (test power to Fused Ignition) LDP vacuum hose is clogged, loose or restricted LDP assembly is damaged or has failed (the switch has failed)

Apr 13, 2011 | Jeep Grand Cherokee Cars & Trucks

2 Answers

I have a 2003 jeep liberty giving the code P1494


http://autorepair.about.com/library/faqs/bl010h.htm The Jeep should still be covered under the 10 year emissions warranty. Bring it in to the dealer.

Dec 14, 2010 | 2002 Jeep Liberty

1 Answer

P1495 Where is the problem???? Check engine ligth is on


Code P1495 is for the LDP solenoid circuit. (LDP-Leak Detection Pump). This is a system that seals off the evaporative system of the car and then pressurizes it with the LDP. The computer looks to see how long it takes to pressurize the system, (depending on fuel level) and then determines if the system is leaking. Emissions regulations require this to cut down on fuel vapours from escaping to the atmosphere. Since the light is on, it means the fault is still there since you replaced a part that has nothing to do with the evaporative system. You will likely have to get a dealer to diag this, unless you can get access to a shop manual and DRB scan tool. Keep in mind, there are a lot of reasons why the check engine light can be turned on. Unless you know what the code is and how to track down the fault, there is no point in replacing any parts as the odds of getting it right the first time is highly unlikely.

Aug 30, 2010 | 1996 Dodge Grand Caravan

1 Answer

I have a 1998 v 6 dodge dakota sport with a p1495 trouble code how do i fix it


DTC P1495 - Leak Detection Pump Solenoid Circuit

WHEN MONITORED: Immediately after a cold start, with battery/ambient temperature between 4.4 °C (40 °F) . F and 32 °C (90 °F) . Coolant temperature within -12 °C (10 °F) of battery/ambient

SET CONDITION: The state of the solenoid circuit does not match the PCM's desired state.

POSSIBLE CAUSES:
* Wiring Harness Intermittent
* Leak Detection Pump
* Fused Ignition Switch Output
* LDP Solenoid Control Circuit Shorted To Ground
* LDP Solenoid Control Circuit Open
* PCM

Leak Detection Pump System
The evaporative emission system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, even small ones, can allow fuel vapors to escape into the atmosphere. Government regulations require on-board testing to make sure that the evaporative (EVAP) system is functioning properly. The leak detection system tests for EVAP system leaks and blockage. It also performs self-diagnostics. During self-diagnostics, 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.

SYMPTOM: P1490-LOW SPEED FAN CONTROL RELAY CIRCUIT
WHEN MONITORED: With the ignition ON. Battery voltage greater than 10 volts .

SET CONDITION: An open or shorted circuit is detected in the radiator fan relay control circuit.

POSSIBLE CAUSES:
* Low Speed Radiator Fan Relay Intermittent Operation
* Intermittent Condition
* Fused Ignition Switch Output Circuit
* Low Speed Radiator Fan Relay Resistance
* Low Speed Radiator Fan Relay Control Circuit Open
* Low Speed Radiator Fan Relay Control Circuit Short To Ground
* PCM


Notes
The Transmission/Transaxle Controller monitors the malfunction of sensors and actuators relating to Transmission/Transaxle Control. If any malfunction is detected, they inform the PCM by sending a signal - By illuminating the MIL and by setting the P0700 code.

P0700 means that a code has been set in the Transmission/Transaxle Controller. If P0700 is present, check for Transmission/Transaxle codes.

Hope helps (remember comment and rated this).

Aug 02, 2010 | Dodge Dakota Cars & Trucks

1 Answer

2001 dodge neon check engine lite is on code 1495 showing


P1495 Leak Detection Pump Solenoid Circuit Open Or Shorted
Code P1495 is for the LDP solenoid circuit. (LDP-Leak Detection Pump). This is a system that seals off the evaporative system of the car and then pressurizes it with the LDP. The computer looks to see how long it takes to pressurize the system, (depending on fuel level) and then determines if the system is leaking. Emissions regulations require this to cut down on fuel vapours from escaping to the atmosphere.You will likely have to get a dealer to diagnose this, unless you can find a shop that has a manual and DRB scan tool.

Apr 09, 2009 | 2001 Dodge Neon

1 Answer

Fix P1494 code


This code is caused by the leak detection pump for the evaporative emissions control system, this is a common fault in your year and model, there are factory bullentins about the code, to replace the pump do the following. As noted in the procedure pay close attention to the condition of the vacuum lines to the pump.


The LDP, (leak detection pump) is located in the left/front corner of engine compartment below the air cleaner housing. It is mounted to left/front inner fender sheet metal. The LDP and LDP filter are replaced (serviced) as one unit.

Mar 04, 2009 | 2002 Jeep Grand Cherokee

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