{"id":48607,"date":"2026-11-03T11:07:09","date_gmt":"2026-11-03T08:07:09","guid":{"rendered":"https:\/\/diagnozabam.ro\/sfaturi\/?p=48607"},"modified":"2026-11-03T11:07:09","modified_gmt":"2026-11-03T08:07:09","slug":"p0420-astra-h-nu-schimba-catalizatorul-inca","status":"publish","type":"post","link":"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/p0420-astra-h-nu-schimba-catalizatorul-inca\/","title":{"rendered":"P0420 Astra H: Nu schimba catalizatorul \u00eenc\u0103!"},"content":{"rendered":"<h2 id=\"p0420-opel-astra-h-cauze-reale-diagnoz\u0103-\u0219i-costuri\" data-lfile-container=\"c3c2fb2f-6512-428f-a591-93769e4e4c3b\" data-pm-slice=\"1 1 []\">P0420 Opel Astra H: cauze reale, diagnoz\u0103 \u0219i costuri<\/h2>\n<p>Ai un Opel Astra H pe benzin\u0103. Martorul motorului s-a aprins. Scannerul arat\u0103 P0420. Primul reflex este s\u0103 cau\u021bi un catalizator nou.<\/p>\n<p>Nu face asta \u00eenc\u0103. Codul P0420 se aprinde des din alte motive. Multe sunt mult mai ieftine dec\u00e2t un catalizator.<\/p>\n<p>\u00cen acest ghid vezi ce \u00eenseamn\u0103 codul, cum \u00eel calculeaz\u0103 calculatorul \u0219i ce verifici \u00een ordine. La final g\u0103se\u0219ti costuri orientative \u0219i un FAQ.<\/p>\n<hr \/>\n<h2 id=\"ce-\u00eenseamn\u0103-codul-p0420-pe-astra-h\">Ce \u00eenseamn\u0103 codul P0420 pe Astra H<\/h2>\n<p>P0420 \u00eenseamn\u0103 eficien\u021b\u0103 a catalizatorului sub prag, banca 1. Pe motoarele cu patru cilindri \u00een linie exist\u0103 o singur\u0103 banc\u0103. Deci codul se refer\u0103 la catalizatorul unic al ma\u0219inii.<\/p>\n<p>Codul apare pe Astra H cu motoare pe benzin\u0103. Printre ele sunt 1.4 Twinport, 1.6 \u0219i 1.8. Pe diesel, logica de diagnoz\u0103 este alta.<\/p>\n<p>Calculatorul nu m\u0103soar\u0103 direct starea catalizatorului. \u00cel judec\u0103 dup\u0103 comportamentul a dou\u0103 sonde lambda. Dac\u0103 datele arat\u0103 ciudat, seteaz\u0103 codul.<\/p>\n<blockquote><p>\u2139\ufe0f Technical Note: Un cod P0420 nu este o sentin\u021b\u0103. Este o concluzie a calculatorului, bazat\u0103 pe semnalul sondelor. Semnalul poate fi gre\u0219it chiar dac\u0103 catalizatorul este s\u0103n\u0103tos.<\/p><\/blockquote>\n<blockquote class=\"wp-embedded-content\" data-secret=\"M3HgyWnX7E\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/tester-obd2-mecanic-mobil-nu-cumpara-inainte\/\">Tester OBD2 Mecanic Mobil: Nu Cump\u0103ra \u00cenainte!<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201eTester OBD2 Mecanic Mobil: Nu Cump\u0103ra \u00cenainte!\u201d \u2013 Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/tester-obd2-mecanic-mobil-nu-cumpara-inainte\/embed\/#?secret=qYsCv0B663#?secret=M3HgyWnX7E\" data-secret=\"M3HgyWnX7E\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr \/>\n<h2 id=\"cum-verific\u0103-calculatorul-catalizatorul\">Cum verific\u0103 calculatorul catalizatorul<\/h2>\n<p>Pe traseul de evacuare sunt dou\u0103 sonde lambda. Prima st\u0103 \u00eenaintea catalizatorului. A doua st\u0103 dup\u0103 el.<\/p>\n<pre spellcheck=\"false\"><code>Motor -&gt; Galerie evacuare -&gt; [Sonda 1] -&gt; Catalizator -&gt; [Sonda 2] -&gt; Toba intermediar\u0103 -&gt; Toba final\u0103\r\n                              (\u00eenainte)                    (dup\u0103)<\/code><\/pre>\n<p>Sonda din fa\u021b\u0103 oscileaz\u0103 rapid. Tensiunea ei urc\u0103 \u0219i coboar\u0103 de mai multe ori pe secund\u0103. Asta arat\u0103 c\u0103 amestecul se corecteaz\u0103 permanent.<\/p>\n<p>Catalizatorul s\u0103n\u0103tos stocheaz\u0103 oxigen. Din cauza asta, sonda din spate are un semnal mult mai calm. Tensiunea ei st\u0103 relativ stabil\u0103.<\/p>\n<p>C\u00e2nd catalizatorul se uzeaz\u0103, nu mai stocheaz\u0103 oxigen. Sonda din spate \u00eencepe s\u0103 imite sonda din fa\u021b\u0103. Calculatorul vede asta \u0219i seteaz\u0103 P0420.<\/p>\n<hr \/>\n<h2 id=\"cauzele-posibile-de-la-cele-mai-ieftine-la-cele-mai-scumpe\">Cauzele posibile, de la cele mai ieftine la cele mai scumpe<\/h2>\n<p>Ordinea de mai jos este orientativ\u0103. Ea te ajut\u0103 s\u0103 nu cheltui bani degeaba.<\/p>\n<h3 id=\"1-sonda-lambda-din-spate-este-uzat\u0103\">1. Sonda lambda din spate este uzat\u0103<\/h3>\n<p>Sonda se \u00eemb\u0103tr\u00e2ne\u0219te. R\u0103spunde tot mai lent. Semnalul ei poate ar\u0103ta a catalizator mort, de\u0219i acesta func\u021bioneaz\u0103.<\/p>\n<p>Pe o ma\u0219in\u0103 cu kilometraj mare, este una dintre cele mai frecvente cauze. Piesa este mult mai ieftin\u0103 dec\u00e2t catalizatorul.<\/p>\n<h3 id=\"2-scurgeri-pe-traseul-de-evacuare\">2. Scurgeri pe traseul de evacuare<\/h3>\n<p>O fisur\u0103 sau o garnitur\u0103 slab\u0103 las\u0103 aer fals \u00een evacuare. Aerul ajunge la sonde. Ele citesc amestec s\u0103rac, chiar dac\u0103 motorul merge bine.<\/p>\n<p>Verific\u0103 zona galeriei, flan\u0219a \u0219i flexibilul de evacuare. O scurgere mic\u0103 se aude la rece, ca un tic-tic care dispare c\u00e2nd metalul se dilat\u0103.<\/p>\n<h3 id=\"3-rateuri-de-aprindere-sau-amestec-dezechilibrat\">3. Rateuri de aprindere sau amestec dezechilibrat<\/h3>\n<p>Un cilindru cu rateuri trimite combustibil nears \u00een catalizator. Se supra\u00eenc\u0103lze\u0219te \u0219i se degradeaz\u0103 repede.<\/p>\n<p>Bujiile uzate, bobinele slabe \u0219i injectoarele murdare sunt vinova\u021bii obi\u0219nui\u021bi. Dac\u0103 ai \u0219i coduri P030x, rezolv\u0103-le primele.<\/p>\n<h3 id=\"4-consum-de-ulei-sau-lichid-de-r\u0103cire\">4. Consum de ulei sau lichid de r\u0103cire<\/h3>\n<p>Uleiul ars las\u0103 depuneri pe suprafa\u021ba catalizatorului. Ele \u00eei reduc capacitatea de lucru. Lichidul de r\u0103cire ars face acela\u0219i lucru.<\/p>\n<p>Dac\u0103 ma\u0219ina ia ulei \u00eentre schimburi, trateaz\u0103 cauza. Altfel, \u0219i un catalizator nou se va strica.<\/p>\n<h3 id=\"5-catalizatorul-este-\u00eentr-adev\u0103r-uzat\">5. Catalizatorul este \u00eentr-adev\u0103r uzat<\/h3>\n<p>Dup\u0103 200.000 de kilometri sau mai mult, uzura este normal\u0103. Miezul ceramic se degradeaz\u0103. Capacitatea de stocare a oxigenului scade.<\/p>\n<p>Aceasta este cauza real\u0103 abia dup\u0103 ce ai exclus punctele de mai sus. Nu \u00eenainte.<\/p>\n<h3 id=\"6-combustibil-de-calitate-slab\u0103-sau-software\">6. Combustibil de calitate slab\u0103 sau software<\/h3>\n<p>Combustibilul prost poate afecta catalizatorul \u00een timp. Rar, apar \u0219i situa\u021bii \u00een care actualizarea software a calculatorului schimb\u0103 pragurile de diagnoz\u0103.<\/p>\n<p>Sunt cauze mai pu\u021bin probabile. Le iei \u00een calcul la final.<\/p>\n<hr \/>\n<h2 id=\"diagnoza-pas-cu-pas\">Diagnoza pas cu pas<\/h2>\n<p>Ai nevoie de un scanner OBD2 care arat\u0103 date live. F\u0103r\u0103 el, ghice\u0219ti. Cu el, vezi exact ce v\u0103d sondele.<\/p>\n<h3 id=\"pasul-1-cite\u0219te-tot-ce-este-\u00een-memorie\">Pasul 1: cite\u0219te tot ce este \u00een memorie<\/h3>\n<p>Nu te opri la P0420. Cite\u0219te toate codurile, inclusiv cele \u00een a\u0219teptare. Verific\u0103 \u0219i datele de tip freeze frame. Ele arat\u0103 \u00een ce condi\u021bii s-a setat eroarea.<\/p>\n<p>Dac\u0103 vezi coduri de rateuri sau de amestec, trateaz\u0103-le primele.<\/p>\n<h3 id=\"pasul-2-ascult\u0103-\u0219i-inspecteaz\u0103-evacuarea\">Pasul 2: ascult\u0103 \u0219i inspecteaz\u0103 evacuarea<\/h3>\n<p>Porneste motorul la rece. Ascult\u0103 zona galeriei. Verific\u0103 vizual urme de funingine \u00een jurul \u00eembin\u0103rilor. Funinginea indic\u0103 o scurgere.<\/p>\n<h3 id=\"pasul-3-urm\u0103re\u0219te-sondele-pe-date-live\">Pasul 3: urm\u0103re\u0219te sondele pe date live<\/h3>\n<p>Motorul trebuie s\u0103 fie cald. Men\u021bine tura\u021bia la aproximativ 2.500 rpm timp de un minut. Apoi compar\u0103 cele dou\u0103 sonde.<\/p>\n<table>\n<colgroup>\n<col \/>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">Parametru<\/th>\n<th colspan=\"1\" rowspan=\"1\">Catalizator s\u0103n\u0103tos<\/th>\n<th colspan=\"1\" rowspan=\"1\">Semn de problem\u0103<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Sonda din fa\u021b\u0103<\/td>\n<td colspan=\"1\" rowspan=\"1\">Oscileaz\u0103 rapid, aproximativ \u00eentre 0,1 \u0219i 0,9 V<\/td>\n<td colspan=\"1\" rowspan=\"1\">R\u0103spuns lent sau semnal blocat<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Sonda din spate<\/td>\n<td colspan=\"1\" rowspan=\"1\">Relativ stabil\u0103, \u00een jur de 0,5 &#8211; 0,7 V<\/td>\n<td colspan=\"1\" rowspan=\"1\">Oscileaz\u0103 ca sonda din fa\u021b\u0103<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Corec\u021bii de combustibil pe termen scurt<\/td>\n<td colspan=\"1\" rowspan=\"1\">Oscileaz\u0103 \u00een jurul lui 0%<\/td>\n<td colspan=\"1\" rowspan=\"1\">Valori mari, constant pozitive sau negative<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Corec\u021bii de combustibil pe termen lung<\/td>\n<td colspan=\"1\" rowspan=\"1\">Aproape de 0%<\/td>\n<td colspan=\"1\" rowspan=\"1\">Peste plus sau minus 10%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote><p>\u2139\ufe0f Technical Note: Valorile din tabel sunt orientative. Ele difer\u0103 dup\u0103 motor \u0219i temperatura de lucru. Conteaz\u0103 comportamentul semnalului, nu o cifr\u0103 exact\u0103.<\/p><\/blockquote>\n<p>Dac\u0103 sonda din spate oscileaz\u0103 ca cea din fa\u021b\u0103, ai dou\u0103 variante. Fie catalizatorul este uzat, fie sonda din spate este defect\u0103. Pasul urm\u0103tor te ajut\u0103 s\u0103 alegi.<\/p>\n<h3 id=\"pasul-4-compar\u0103-temperaturile\">Pasul 4: compar\u0103 temperaturile<\/h3>\n<p>Dup\u0103 ce motorul se \u00eenc\u0103lze\u0219te complet, m\u0103soar\u0103 temperatura \u021bevii \u00eenainte \u0219i dup\u0103 catalizator. Folose\u0219te un termometru cu infraro\u0219u.<\/p>\n<p>Un catalizator func\u021bional lucreaz\u0103 chimic \u0219i se \u00eenc\u0103lze\u0219te. \u021aeava de dup\u0103 el este de obicei mai fierbinte sau cel pu\u021bin egal\u0103. Dac\u0103 este vizibil mai rece, catalizatorul nu face reac\u021bia.<\/p>\n<p>Testul este orientativ. Nu \u00eenlocuie\u0219te analiza datelor live. Dar completeaz\u0103 imaginea.<\/p>\n<blockquote><p>\u26a0\ufe0f WARNING: Evacuarea atinge temperaturi foarte mari. Nu atinge \u021bevile cu m\u00e2na. Lucreaz\u0103 cu motorul cald doar la distan\u021b\u0103 sigur\u0103 \u0219i cu protec\u021bie.<\/p><\/blockquote>\n<h3 id=\"pasul-5-testeaz\u0103-cu-o-sond\u0103-nou\u0103-doar-dac\u0103-ai-dubii\">Pasul 5: testeaz\u0103 cu o sond\u0103 nou\u0103, doar dac\u0103 ai dubii<\/h3>\n<p>Dac\u0103 toate indiciile arat\u0103 spre sonda din spate, \u00eenlocuie\u0219te-o. \u0218terge codul. Condu c\u00e2teva zile \u0219i urm\u0103re\u0219te dac\u0103 P0420 revine.<\/p>\n<p>Dac\u0103 nu revine, ai economisit costul unui catalizator.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"jEAQedPNVA\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/motorul-bate-la-rece-ce-e-grav-si-ce-e-normal\/\">Motorul bate la rece? Ce e grav \u0219i ce e normal<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201eMotorul bate la rece? Ce e grav \u0219i ce e normal\u201d \u2013 Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/motorul-bate-la-rece-ce-e-grav-si-ce-e-normal\/embed\/#?secret=9gPvIVlZ9F#?secret=jEAQedPNVA\" data-secret=\"jEAQedPNVA\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr \/>\n<h2 id=\"c\u00e2t-cost\u0103-orientativ\">C\u00e2t cost\u0103, orientativ<\/h2>\n<p>Pre\u021burile variaz\u0103 mult dup\u0103 pies\u0103, marc\u0103 \u0219i service. Cifrele de mai jos sunt estim\u0103ri \u00een lei, nu oferte.<\/p>\n<table>\n<colgroup>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">Interven\u021bie<\/th>\n<th colspan=\"1\" rowspan=\"1\">Cost orientativ<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Sond\u0103 lambda din spate, pies\u0103<\/td>\n<td colspan=\"1\" rowspan=\"1\">150 &#8211; 500 lei<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Garnitur\u0103 sau flexibil de evacuare<\/td>\n<td colspan=\"1\" rowspan=\"1\">100 &#8211; 500 lei, cu manoper\u0103<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Set bujii<\/td>\n<td colspan=\"1\" rowspan=\"1\">80 &#8211; 250 lei<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Bobin\u0103 de aprindere<\/td>\n<td colspan=\"1\" rowspan=\"1\">100 &#8211; 300 lei bucata<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Catalizator aftermarket<\/td>\n<td colspan=\"1\" rowspan=\"1\">600 &#8211; 2.500 lei<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Catalizator original<\/td>\n<td colspan=\"1\" rowspan=\"1\">Semnificativ mai mult<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Diferen\u021ba este clar\u0103. De aceea merit\u0103 s\u0103 elimini primele cauze \u00eenainte de a comanda catalizatorul.<\/p>\n<hr \/>\n<h2 id=\"ce-s\u0103-nu-faci\">Ce s\u0103 nu faci<\/h2>\n<ul>\n<li><strong>Nu \u0219terge codul \u0219i nu ignora problema.<\/strong> Martorul revine. Iar dac\u0103 cauza este un rateu, catalizatorul chiar se distruge.<\/li>\n<li><strong>Nu folosi aditivi miraculo\u0219i ca solu\u021bie unic\u0103.<\/strong> Pot ajuta la depuneri u\u0219oare. Nu repar\u0103 un miez ceramic degradat.<\/li>\n<li><strong>Nu scoate catalizatorul.<\/strong> Interven\u021bia este ilegal\u0103 pe un autovehicul rutier. Ma\u0219ina poate fi respins\u0103 la ITP \u0219i se poate sanc\u021biona.<\/li>\n<li><strong>Nu schimba doar sonda din fa\u021b\u0103<\/strong> f\u0103r\u0103 s\u0103 ai un motiv. Pentru P0420, sonda din spate este suspectul principal.<\/li>\n<\/ul>\n<hr \/>\n<h2 id=\"diagnoza-la-fa\u021ba-locului\">Diagnoza la fa\u021ba locului<\/h2>\n<p>Pentru un cod ca acesta, scannerul face diferen\u021ba. Cite\u0219ti datele live \u0219i compari cele dou\u0103 sonde chiar l\u00e2ng\u0103 ma\u0219in\u0103. Nu trimi\u021bi clientul la service pe baza unei presupuneri.<\/p>\n<p>Un scanner bidirec\u021bional, precum <a href=\"https:\/\/mythinkcar.com\/collections\/advanced-diagnostic-scanners\/products\/thinkcar-thinkscan-689bt-bidirectional-scan-tool?ref=diagnozabam\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">THINKCAR THINKSCAN 689BT<\/a>, arat\u0103 parametrii live \u0219i \u00ee\u021bi permite s\u0103 urm\u0103re\u0219ti corec\u021biile de combustibil. Asta scurteaz\u0103 diagnoza.<\/p>\n<p>Oricare ar fi scannerul, regula r\u0103m\u00e2ne aceea\u0219i. Date live \u00eent\u00e2i, piese dup\u0103.<\/p>\n<hr \/>\n<h2 id=\"concluzie\">Concluzie<\/h2>\n<p>P0420 pe Astra H nu \u00eenseamn\u0103 automat catalizator mort. Cel mai des, vinovatul este sonda din spate sau o scurgere de evacuare. Alteori, rateurile sunt cauza, iar catalizatorul este doar victima.<\/p>\n<p>Merge pe ordine. Cite\u0219te toate codurile. Verific\u0103 scurgerile. Urm\u0103re\u0219te sondele. Compar\u0103 temperaturile. Abia la final \u00eenlocuie\u0219ti catalizatorul.<\/p>\n<p>Astfel evi\u021bi o cheltuial\u0103 mare, iar ma\u0219ina trece f\u0103r\u0103 probleme \u0219i la ITP.<\/p>\n<hr \/>\n<h2 id=\"faq\">FAQ<\/h2>\n<h3 id=\"pot-circula-cu-codul-p0420-activ\">Pot circula cu codul P0420 activ?<\/h3>\n<p>De obicei, ma\u0219ina merge normal. Dar nu ignora codul pe termen lung. Dac\u0103 cauza este un rateu, catalizatorul se poate distruge \u0219i poate cre\u0219te consumul.<\/p>\n<h3 id=\"c\u00e2t-timp-rezist\u0103-un-catalizator-pe-astra-h\">C\u00e2t timp rezist\u0103 un catalizator pe Astra H?<\/h3>\n<p>\u00cen condi\u021bii bune, poate dep\u0103\u0219i 200.000 de kilometri. Rateurile, uleiul ars \u0219i combustibilul slab \u00eei scurteaz\u0103 via\u021ba.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"vs2sWB3nNd\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/lampa-abs-aprinsa-senzorul-nu-e-mereu-vinovatul\/\">Lampa ABS Aprins\u0103? Senzorul Nu E Mereu Vinovatul<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201eLampa ABS Aprins\u0103? Senzorul Nu E Mereu Vinovatul\u201d \u2013 Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/ro\/blog\/lampa-abs-aprinsa-senzorul-nu-e-mereu-vinovatul\/embed\/#?secret=6ueuWiJ8Wy#?secret=vs2sWB3nNd\" data-secret=\"vs2sWB3nNd\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<h3 id=\"pot-\u0219terge-codul-\u0219i-s\u0103-merg-mai-departe\">Pot \u0219terge codul \u0219i s\u0103 merg mai departe?<\/h3>\n<p>Po\u021bi, dar codul revine dac\u0103 cauza r\u0103m\u00e2ne. \u0218tergerea nu rezolv\u0103 nimic. Doar ascunde problema pentru c\u00e2teva zile.<\/p>\n<h3 id=\"cum-\u0219tiu-dac\u0103-este-sonda-sau-catalizatorul\">Cum \u0219tiu dac\u0103 este sonda sau catalizatorul?<\/h3>\n<p>Urm\u0103re\u0219ti datele live. Dac\u0103 sonda din spate oscileaz\u0103 ca cea din fa\u021b\u0103, problema este la una dintre ele. Un test de temperatur\u0103 \u0219i o sond\u0103 nou\u0103 ajut\u0103 s\u0103 faci diferen\u021ba.<\/p>\n<h3 id=\"merit\u0103-un-catalizator-aftermarket\">Merit\u0103 un catalizator aftermarket?<\/h3>\n<p>Poate fi o solu\u021bie rezonabil\u0103 pentru buget. Alege o marc\u0103 cunoscut\u0103, cu omologare. Piesele foarte ieftine se degradeaz\u0103 repede \u0219i P0420 poate reveni.<\/p>\n<h3 id=\"p0420-apare-\u0219i-pe-astra-h-diesel\">P0420 apare \u0219i pe Astra H diesel?<\/h3>\n<p>Pe motoarele diesel, diagnoza emisiilor se face diferit, cu filtru de particule \u0219i alte sonde. Ghidul de fa\u021b\u0103 se refer\u0103 la versiunile pe benzin\u0103.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>P0420 Opel Astra H: cauze reale, diagnoz\u0103 \u0219i costuri Ai un Opel Astra H pe benzin\u0103. Martorul motorului s-a aprins. Scannerul arat\u0103 P0420. Primul reflex este s\u0103 cau\u021bi un catalizator nou. Nu face asta \u00eenc\u0103. Codul P0420 se aprinde des din alte motive. Multe sunt mult mai ieftine dec\u00e2t un catalizator. \u00cen acest ghid vezi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":48130,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1933],"tags":[52024,13372,12819,17655,55529],"class_list":["post-48607","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-auto","tag-catalizator","tag-opel-astra-h","tag-p0420","tag-sonda-lambda","tag-thinkscan-689bt"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>P0420 Astra H: Nu schimba catalizatorul \u00eenc\u0103! - DBAM<\/title>\n<meta name=\"description\" content=\"Codul P0420 pe Astra H nu \u00eenseamn\u0103 mereu catalizator mort. 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