P2002

Maana ya rejea hii

Moduli ya udhibiti ilirekodi hali inayolingana na Diesel Particulate Filter Efficiency Below Threshold Bank 1. Hii hutambua hali inayofuatiliwa, si sehemu iliyoharibika kwa uhakika. Toleo la programu, hali za uendeshaji na misimbo inayohusiana lazima izingatiwe pamoja.

Mfumo unaofuatiliwa: Diesel particulate filter efficiency monitoring

Dalili zinazowezekana

• Taa ya kuonyesha hitilafu
• Usafishaji wa kichujio unaweza kuzuiwa au kuombwa mara kwa mara
• Uendeshaji wenye nguvu iliyopunguzwa kwenye baadhi ya mifumo ya magari

Sababu zinazowezekana za kuchunguza

• Uvujaji wa moshi kabla ya au karibu na kichujio kinachofuatiliwa
• Ishara isiyo sahihi ya tofauti ya shinikizo, mirija iliyoziba au hitilafu ya nyaya
• Mzigo mkubwa kupita kiasi wa masizi au mkusanyiko wa majivu
• Hitilafu ya kihisi cha joto au udhibiti wa usafishaji wa kichujio
• Tatizo la mwako, hewa iliyobanwa, EGR au kidungaji linaloongeza uzalishaji wa chembe
• Kichujio cha chembe kilichoharibika au kisichofaa

Orodha ya sababu zinazowezekana si agizo la kubadilisha vipuri. Jaribu saketi na mfumo chini ya hali zinazowezesha msimbo huo kurekodiwa.

Mlolongo wa uchunguzi wa karakana

1. 01

   Preserve freeze-frame, pending codes and regeneration history.

2. 02

   Inspect the exhaust for leaks and verify pressure hoses are correctly routed and clear.

3. 03

   Compare differential pressure with key-on/engine-off and controlled engine-speed conditions.

4. 04

   Review soot and ash estimates, exhaust temperatures and regeneration prerequisites.

5. 05

   Diagnose engine faults that can increase particulate production before judging the filter.

6. 06

   Repair the cause, complete the OEM verification procedure and confirm the monitor passes.

Muktadha wa kiufundi unaohusiana

Uzingatiaji

Hitilafu za usalama na udhibiti wa moshi hazipaswi kufichwa kamwe kwenye gari la barabarani. Tambua na urekebishe chanzo. OBD na mifumo ya udhibiti wa moshi inayohitajika lazima iendelee kufanya kazi pale sheria husika inapoagiza.