Check Engine Light Due to Pinched Leak Detection Pump Vacuum Lines on Dodge Ram 1500

If a Check Engine Light illuminates indicating leak detection pump (LDP) failure, the cause is often pinched or disconnected vacuum lines to the pump. Vacuum lines should be inspected before replacing the leak detection pump. Contamination (carbon or debris) in the pump can cause failure and any hoses should be cleared before a new pump is installed.

RepairPal Verified
Average mileage: 117,478 (25,000–200,000)
Exhaust & Emissions affected: Gasoline
14 model years affected: 1994, 1995, 1996, 1997, more1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
32 people reported this problem
10 people shared problem details
Were is it located
2004 Dodge Ram 1500170,000
Check engine light came on with code P0456 (Emission leak- EVAP system small leak). Gas cap is tight. I have not had a chance to inspect vacuum system.
Was informed I needed a NVLD pump and a PCV valve. Total maintainance $250
2002 Dodge Ram 150079,478
engine light on but runs fine heard a hissing under the truck and found two air lines cracked and part of the line missing when I took the lines off the crumbled in my hand much like my dash board I replace the lines and the light went out
2002 Dodge Ram 150090,000
Replaced leak detection pump. Chech engine light came backb On about 1000 miles later,cleared dtc. Hasn't been a problem yet
Leak detection pump bad
2003 Dodge Ram 1500127,000
light has been on since 52000 miles cannot find the problem replaced th module and went off for a while then came back had checked and fuel system still a problem dodge would not fix because had just went out of warranty. feel it is there problem and they should still fix
2003 Dodge Ram 150025,000
problem not yet fixed.
2004 Dodge Ram 150080,000
just came on then my pump fell off. I found out later the wirering housing had melted.
Check engine light vacuum lines clogged
Related Items:
I was driving down the freeway and my gas light and check engine light came on and it said i di...
A/C works great until I engage my brake pedal, then I can hear a pop sound in the dash (baffle?) and only hot air blows out of vents. I have to turn a/c off and back on to get the cold air back whi...
I had a check engine light on and when RPM were high it would kind of misfire. Had it checked a...
Ok so My check Engine light is on and my speedometer isnt working what do I do??
i want to reset the check engine light on my 2007 dodge ram pickup.

Related Content