Re: leak detection pump
FYI - There is a TSB out about this problem. It may be covered by your warranty...
Emissions - MIL ON/DTC P2404 Set
Bulletin No: 01-043/09
Last Issued; 10/05/2009
MIL ON WITH DTC P2404
2004-2007 Mazda3 vehicles (including Mazdaspeed3)
with VINS lower than JM1BK******645876 (produced before October 2, 2006)
Some vehicles may experience the MIL on with DTC P2404 (EVAP system leak detection pump sensor circuit malfunction), but diagnostics show no problem can be found. Improper sealing of the leak detection pump (LDP) change over valve causes low output electrical current. As a result, the PCM determines a malfunction of the LDP sensor.
Customers having this concern should have their vehicle repaired using the following repair procedure.
1. Verify customer concern.
2. Check for the following and repair if necessary:
- Clogged EVAP system air filter
- Bent or pinched EVAP hoses
- No continuity in wiring between PCM and LDP.
3. Remove the LPD and perform air flow inspection and resistance inspection. Refer to MS3 online instructions or Workshop manual section 01-16. If any problem is found, replace the LDP.
4. Verify repair.
NOTE: This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
^ Non-California Emissions Warranty States - Repair will be covered under Mazda's New Vehicle Limited Warranty term (36/36).
^ California Emissions Warranty States - Repair will be covered under California Emission Defect/ Specific Parts Warranty term (84/70) for the following vehicles:
- 2004 and 2005 Mazda3 with 2.3 L
- 2007 Mazdaspeed3
^ Additional diagnostic time cannot be claimed for this repair.