We just replaced the leak detection pump and the check engine light came back on with a code stating a problem with the leak detection pump. Any answers?
2007-01-30 14:52:09 · 3 answers · asked by lindseydiederichs 1 in Cars & Transportation ➔ Car Makes ➔ Jeep
Anyone clear the codes before changing the pump.Could it be a code from the previous pump.
2007-01-30 14:57:22 · answer #1 · answered by misc 75 3 · 0⤊ 0⤋
a bad LDP vent valve @ the Charcoal Canister or you haven't done the TSB for the pcm reflash for a erroneous evap dtc
Here is part of the TSb
NUMBER: 18-002-03
GROUP: Vehicle Performance
DATE: Jan. 31, 2003
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-016-02 REV A, DATED SEPTEMBER 23, 2002, WHICH SHOULD BE REM9VED FROM YOUR FILES. THE REVISION IS HIGHLIGHTED WITH **ASTERISK** AND INCLUDES AN ADDITIONAL MODEL YEAR FOR THE WJ VEHICLES.
THIS BULLETIN IS BEING PROVIDED IN ADVANCE. THE TechCONNECT/MDS2 MUST BE OPERATING WITH CIS CD2126 OR HIGHER, AVAILABLE FEBRUARY 17, 2003.
SUBJECT:
Flash: MIL Illumination For Erroneous DTC P0456 - EVAP Monitor Small Leak Detected
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2002 (AN) Dakota
2002 (DN) Durango
**2002** - (WJ) Grand Cherokee
2007-01-30 15:02:47 · answer #2 · answered by Magikmann 4 · 0⤊ 0⤋
Don't sweat it! It sounds like whatever is the problem is part of the emission control system. By law, the emissions control systems are covered by warranty for 100,000 miles.
Don't try to diagnose this issue. Take it to the dealer and get them to take care of this issue.
2007-01-30 15:00:04 · answer #3 · answered by sk33t3r 3 · 0⤊ 1⤋