[{"data":1,"prerenderedAt":460},["ShallowReactive",2],{"article:\u002Fnews\u002Fbosch-ima-isa-injector-codes-explained":3,"related:\u002Fnews\u002Fbosch-ima-isa-injector-codes-explained":427},{"id":4,"title":5,"author":6,"body":7,"category":408,"date":409,"description":410,"extension":411,"featured":412,"image":413,"imageAlt":414,"meta":415,"navigation":416,"path":417,"readingTime":418,"seo":419,"seoTitle":420,"stem":421,"tags":422,"updated":409,"__hash__":426},"news\u002Fnews\u002Fbosch-ima-isa-injector-codes-explained.md","Bosch IMA and ISA Injector Codes Explained","Injectune editorial",{"type":8,"value":9,"toc":390},"minimark",[10,28,31,36,92,111,114,118,121,129,132,148,151,155,163,166,220,223,227,235,238,246,250,257,265,268,286,289,293,300,307,319,323,328,331,335,338,342,345,349,352,356,387],[11,12,13,14,21,22,27],"p",{},"Bosch IMA and ISA refer to different adaptation concepts in diesel injector work. IMA concerns individual injection-quantity adjustment; ISA concerns injector voltage adjustment in the piezo context. Understanding the difference helps a workshop ask for the correct test, interpret a report and avoid confusing a measured characteristic with a complete replacement code. Bosch defines the terms in its ",[15,16,20],"a",{"href":17,"rel":18},"https:\u002F\u002Fwww.boschaftermarket.com\u002Fxrm\u002Fmedia\u002Fimages\u002Fcountry_specific\u002Fpl\u002Fequipment_12\u002Fdiesel_2018.pdf#page=6",[19],"nofollow","diesel equipment catalogue"," and ",[15,23,26],{"href":24,"rel":25},"https:\u002F\u002Fwww.bosch-presse.de\u002Fpressportal\u002Fde\u002Fneuer-kompakter-diesel-einspritzduesen-tester-eps-205-von-bosch-mit-praeziser-messtechnik-42727.html",[19],"EPS 205 technical announcement",".",[11,29,30],{},"This guide explains the terminology and the records to check. It does not supply a universal Bosch code decoder or a substitute for an injector-specific repair procedure.",[32,33,35],"h2",{"id":34},"what-do-ima-iqa-and-isa-mean","What do IMA, IQA and ISA mean?",[37,38,39,55],"table",{},[40,41,42],"thead",{},[43,44,45,49,52],"tr",{},[46,47,48],"th",{},"Term",[46,50,51],{},"Meaning in this context",[46,53,54],{},"What the workshop should establish",[56,57,58,70,81],"tbody",{},[43,59,60,64,67],{},[61,62,63],"td",{},"IMA",[61,65,66],{},"Injektor-Mengen-Abgleich: individual injection-quantity adjustment",[61,68,69],{},"The quantity-correction coding procedure for the exact injector",[43,71,72,75,78],{},[61,73,74],{},"IQA",[61,76,77],{},"Injector quantity adjustment; Bosch uses IMA\u002FIQA terminology in equipment descriptions",[61,79,80],{},"The wording and function used by the relevant equipment or vehicle application",[43,82,83,86,89],{},[61,84,85],{},"ISA",[61,87,88],{},"Injektor-Spannungs-Abgleich: injector voltage adjustment, associated with piezo testing",[61,90,91],{},"Whether the applicable piezo procedure includes ISA measurement or adjustment and how it relates to the final code",[11,93,94,95,99,100,105,106,110],{},"The IMA definition appears in ",[15,96,98],{"href":17,"rel":97},[19],"Bosch's 2018\u002F2019 catalogue",". The current ",[15,101,104],{"href":102,"rel":103},"https:\u002F\u002Fwww.boschaftermarket.com\u002Fme\u002Fen\u002Fequipment\u002Ftest-equipment\u002Ftest-benches-and-tools\u002Fdci-700\u002F",[19],"DCI 700 description"," uses IMA\u002FIQA, while Bosch's ",[15,107,109],{"href":24,"rel":108},[19],"EPS 205 announcement"," explicitly identifies ISA with piezo injectors.",[11,112,113],{},"These names are not a universal character map. Do not assume that a particular character position, code length or conversion rule applies to every Bosch injector because it works on one vehicle.",[32,115,117],{"id":116},"why-isa-is-more-than-another-name-for-ima","Why ISA is more than another name for IMA",[11,119,120],{},"Quantity correction and piezo voltage adjustment describe different aspects of an injector's behaviour. A menu may display them together as IMA\u002FISA without making them interchangeable.",[11,122,123,124,27],{},"Bosch's historical piezo equipment listing explicitly describes IMA coding including ISA. Separately, its EPS 205 literature describes ISA-related testing while stating that the tester cannot perform IMA coding. The distinction is useful: a device can measure a relevant characteristic without offering the complete code-generation procedure. ",[15,125,128],{"href":126,"rel":127},"https:\u002F\u002Fwww.boschaftermarket.com\u002Fxrm\u002Fmedia\u002Fimages\u002Fcountry_specific\u002Fpl\u002Fequipment_12\u002Fdiesel_2018.pdf",[19],"Bosch diesel catalogue, pages 24 and 32–33",[11,130,131],{},"When reviewing a quotation or test result, ask which output is being described:",[133,134,135,139,142,145],"ul",{},[136,137,138],"li",{},"A measured ISA-related result within a test sequence.",[136,140,141],{},"A pass\u002Ffail assessment against the selected test plan.",[136,143,144],{},"A complete supported calibration code issued for the injector.",[136,146,147],{},"A vehicle diagnostic function that registers the supplied code.",[11,149,150],{},"Request the output by name and inspect the report. A successful measurement step should not be presented as evidence that every later coding or installation step has been completed.",[32,152,154],{"id":153},"identify-the-injector-before-interpreting-its-code","Identify the injector before interpreting its code",[11,156,157,158,27],{},"Bosch's QualityScan identification guide labels the IMA code, type-part number, serial number and manufacturing date as separate fields. It also warns that marking layouts differ on some components. Use the documentation for the actual injector instead of relying on a single photograph found online. ",[15,159,162],{"href":160,"rel":161},"https:\u002F\u002Fqualityscan.bosch-automotive.com\u002FHelp\u002Fen\u002FBDX\u002Fsearchcomponent.htm",[19],"Bosch component identification guide",[11,164,165],{},"Keep these records separate:",[37,167,168,178],{},[40,169,170],{},[43,171,172,175],{},[46,173,174],{},"Record",[46,176,177],{},"Purpose",[56,179,180,188,196,204,212],{},[43,181,182,185],{},[61,183,184],{},"Injector part number",[61,186,187],{},"Select the correct application and supporting documentation",[43,189,190,193],{},[61,191,192],{},"Individual identity or serial information",[61,194,195],{},"Keep the physical injector connected to its job record",[43,197,198,201],{},[61,199,200],{},"Applicable calibration code",[61,202,203],{},"Record the correction information supplied or generated for that injector",[43,205,206,209],{},[61,207,208],{},"Repair ID",[61,210,211],{},"Retrieve the associated repair record where the relevant traceability system is used",[43,213,214,217],{},[61,215,216],{},"Vehicle cylinder assignment",[61,218,219],{},"Preserve the association between the installed injector and the position used in the vehicle procedure",[11,221,222],{},"A sensible receiving check is to photograph the markings, identify each unit in a set and compare them with the supplier's paperwork. If records conflict, resolve the identity before treating any code as the correct one.",[32,224,226],{"id":225},"can-an-ima-code-be-retrieved-from-a-repair-record","Can an IMA code be retrieved from a repair record?",[11,228,229,230,27],{},"For components recorded in Bosch QualityScan, repair information can include the IMA identifier and the repairer's details. The system identifies repairs carried out within the authorised Bosch diesel network and lets users search with the relevant component information. This is a lookup of an existing record, not generation of a new calibration from a part number. ",[15,231,234],{"href":232,"rel":233},"https:\u002F\u002Fqualityscan.bosch-automotive.com\u002FAccount\u002FLogin.aspx",[19],"Bosch QualityScan",[11,236,237],{},"That distinction is particularly useful when a repaired injector arrives with incomplete paperwork. First ask the supplier for the record that belongs to that physical unit. Where a QualityScan repair ID exists, use the official service to verify the available information. Do not assume that every Bosch injector, every repair or every independent workshop is represented in that database.",[11,239,240,241,245],{},"A DataMatrix repair label is also not interchangeable with a DENSO compensation QR marking. The symbol's appearance does not tell you what the encoded information represents. Our ",[15,242,244],{"href":243},"\u002Fnews\u002Fdenso-injector-qr-codes-explained","DENSO QR guide"," explains that separate workflow.",[32,247,249],{"id":248},"test-coverage-and-code-coverage-need-separate-confirmation","Test coverage and code coverage need separate confirmation",[11,251,252,253,27],{},"Bosch's DCI 700 page lists IMA\u002FIQA coding alongside application capabilities such as VCC\u002FNCC testing, backflow-pressure control and accessory options. These are distinct parts of the equipment description. Selecting a bench therefore requires an application check, even when the relevant coding family appears in its specification. ",[15,254,256],{"href":102,"rel":255},[19],"Bosch DCI 700",[11,258,259,260,264],{},"For your own workshop, record the injector part number, the required procedure and the installed software\u002Fdata revision. Ask the equipment supplier to confirm the necessary drive, connections and coding output. Read ",[15,261,263],{"href":262},"\u002Fnews\u002Fhow-to-choose-a-diesel-injector-test-bench","how to choose a diesel injector test bench"," for the full purchasing checklist.",[11,266,267],{},"If a code is rejected during vehicle registration, collect evidence before asking for a replacement:",[269,270,271,274,277,280,283],"ol",{},[136,272,273],{},"Record the exact diagnostic message and the vehicle\u002Fengine identification.",[136,275,276],{},"Compare the physical injector identity with the supplier's code record.",[136,278,279],{},"Confirm the selected vehicle function and expected input format using its service information.",[136,281,282],{},"Verify the intended cylinder assignment and whether the displayed data actually saved.",[136,284,285],{},"Refer unresolved mismatches to the injector supplier or responsible technical support team.",[11,287,288],{},"Do not delete characters, substitute a neighbouring injector's code or try arbitrary values until an input is accepted. Acceptance of a string is not evidence that it describes the installed injector.",[32,290,292],{"id":291},"how-imaisa-fits-the-injectune-workflow","How IMA\u002FISA fits the Injectune workflow",[11,294,295,299],{},[15,296,298],{"href":297},"\u002Fsoftware","Injectune Control"," documents Bosch IMA and IMA\u002FISA coding for solenoid and piezo injector applications. The operator workflow also includes injector-profile selection, delivery and spill measurements, S-Time response monitoring, electronic matching and saved or printed protocols.",[11,301,302,303,27],{},"These functions let the workshop keep the selected application, measurements and supported coding work in one environment. The available procedures depend on the installed database, software version, platform configuration and application fixtures. Send the specific Bosch part numbers and the required IMA\u002FISA work when ",[15,304,306],{"href":305},"\u002Fcontact","discussing your configuration",[11,308,309,310,314,315,27],{},"For the measurement side of the process, see ",[15,311,313],{"href":312},"\u002Fnews\u002Fdiesel-injector-test-plans-and-coding-profiles","common rail test plans and coding profiles",". For the distinction between calibration, code generation and ECU registration, continue with the ",[15,316,318],{"href":317},"\u002Fnews\u002Fdiesel-injector-coding-ima-c2i-c3i-qr","general injector coding guide",[32,320,322],{"id":321},"frequently-asked-questions","Frequently asked questions",[324,325,327],"h3",{"id":326},"is-isa-another-name-for-injector-quantity-adjustment","Is ISA another name for injector quantity adjustment?",[11,329,330],{},"No. In the Bosch terminology discussed here, ISA refers to injector voltage adjustment for the piezo context. It should not be used as a synonym for IMA or IQA.",[324,332,334],{"id":333},"does-an-isa-result-prove-that-a-new-complete-code-was-generated","Does an ISA result prove that a new complete code was generated?",[11,336,337],{},"No. Check the equipment's specified function and the actual output. A test characteristic, an assessment and a complete coding procedure are different deliverables.",[324,339,341],{"id":340},"can-i-derive-the-correct-code-from-the-bosch-part-number","Can I derive the correct code from the Bosch part number?",[11,343,344],{},"A part number identifies an application; it does not, by itself, establish the individual injector's calibration record. Obtain the appropriate supplied code, a verified existing repair record or the output of the supported calibration process.",[324,346,348],{"id":347},"is-a-bosch-qualityscan-repair-id-the-same-as-an-ima-code","Is a Bosch QualityScan repair ID the same as an IMA code?",[11,350,351],{},"No. The repair ID identifies the repair record. That record may contain an IMA identifier, but the two fields have different purposes.",[32,353,355],{"id":354},"sources-and-further-reading","Sources and further reading",[133,357,358,365,371,377],{},[136,359,360,364],{},[15,361,363],{"href":126,"rel":362},[19],"Bosch — Diesel equipment catalogue 2018\u002F2019",", especially pages 6, 24 and 32–33.",[136,366,367,27],{},[15,368,370],{"href":24,"rel":369},[19],"Bosch — EPS 205 technical announcement, 16 September 2014",[136,372,373,27],{},[15,374,376],{"href":102,"rel":375},[19],"Bosch — DCI 700 equipment description",[136,378,379,21,383,27],{},[15,380,382],{"href":160,"rel":381},[19],"Bosch — QualityScan component identification",[15,384,386],{"href":232,"rel":385},[19],"repair-record lookup",[11,388,389],{},"Historical Bosch documents are used to explain terminology and equipment distinctions, not to assert current coverage for every injector. The checklists are editorial guidance; application-specific service and equipment instructions remain decisive.",{"title":391,"searchDepth":392,"depth":392,"links":393},"",2,[394,395,396,397,398,399,400,407],{"id":34,"depth":392,"text":35},{"id":116,"depth":392,"text":117},{"id":153,"depth":392,"text":154},{"id":225,"depth":392,"text":226},{"id":248,"depth":392,"text":249},{"id":291,"depth":392,"text":292},{"id":321,"depth":392,"text":322,"children":401},[402,404,405,406],{"id":326,"depth":403,"text":327},3,{"id":333,"depth":403,"text":334},{"id":340,"depth":403,"text":341},{"id":347,"depth":403,"text":348},{"id":354,"depth":392,"text":355},"articles","2026-08-27","Understand Bosch IMA, IQA and ISA coding, the difference between quantity and voltage adjustment, and how to verify injector identity and calibration records.","md",false,"\u002Fmedia\u002Farticles\u002Fbosch-injector-photo-v2.webp","Photo adaptation of a Bosch common rail diesel injector with its stepped steel body and identification housing.",{},true,"\u002Fnews\u002Fbosch-ima-isa-injector-codes-explained","6",{"title":5,"description":410},"Bosch IMA and ISA Injector Codes Explained | Injectune","news\u002Fbosch-ima-isa-injector-codes-explained",[423,63,85,74,424,425],"Bosch injector coding","Piezo injectors","Common rail","9L-do5UWj6qI3arfpctjYfPN9t7TE20PckbdqK2CMYI",[428,439,448],{"path":312,"title":429,"description":430,"category":408,"date":409,"author":6,"image":431,"imageAlt":432,"readingTime":418,"featured":412,"tags":433},"Common Rail Injector Testing: How to Read a Test Report","Learn to read a common rail injector test report: delivery, leak-off, pressure, pulse width, pass limits and the difference between profiles and codes.","\u002Fmedia\u002Farticles\u002Fcommon-rail-testing-photo-v2.webp","Bosch common rail diesel injector showing its steel body, nozzle and electrical terminal housing.",[434,435,436,437,438],"Common rail injector testing","Test plans","Leak-off","Injector coding","Test reports",{"path":243,"title":440,"description":441,"category":408,"date":409,"author":6,"image":442,"imageAlt":443,"readingTime":418,"featured":412,"tags":444},"DENSO Injector QR Codes and ECU Registration","Learn where to find DENSO injector compensation codes, how QR markings differ from part numbers, and what to verify before ECU registration or recoding.","\u002Fmedia\u002Farticles\u002Fdenso-injector-photo-v2.webp","Photo adaptation of a DENSO injector connected to electrical test equipment on a workshop surface.",[445,446,425,447,437],"DENSO QR","Injector compensation code","ECU registration",{"path":317,"title":449,"description":450,"category":408,"date":409,"author":6,"image":451,"imageAlt":452,"readingTime":418,"featured":412,"tags":453},"Diesel Injector Coding Explained","Understand IMA, ISA, C2i\u002FC3i\u002FC4i, IIC and QR injector codes: what they mean, how calibration creates them and how ECU registration differs from bench testing.","\u002Fmedia\u002Farticles\u002Fdiesel-injector-coding-photo-v2.webp","Photo adaptation of a row of diesel injectors showing their steel bodies, nozzle ends and electrical terminal housings.",[454,425,63,85,455,456,457,458,459],"Diesel injector coding","C2i","C3i","C4i","IIC","QR",1787824832448]