{"id":23335,"date":"2025-09-24T02:32:22","date_gmt":"2025-09-24T02:32:22","guid":{"rendered":"https:\/\/www.obd2tool.com\/blog\/?p=23335"},"modified":"2025-10-09T03:27:31","modified_gmt":"2025-10-09T03:27:31","slug":"how-to-solve-mb-star-benz-c6-xentry-diagnosis-vci-fault-number-c003","status":"publish","type":"post","link":"https:\/\/www.obd2tool.com\/blog\/how-to-solve-mb-star-benz-c6-xentry-diagnosis-vci-fault-number-c003\/","title":{"rendered":"How to Solve MB Star BENZ C6 Xentry Diagnosis VCI Fault number: C003"},"content":{"rendered":"

Tried to scan a Mercedes E-Class W213 using MB Star C6<\/a>, but the diagnosis could not proceed. The system displayed the error message: Authentication has failed with fault number C003.<\/p>\n

Authentication has failed.<\/strong>
\nPossible causes
\n– The server for diagnosis certificates is not accessible or is not esponding.
\n– The logged-in user does not have sufficient permissions.
\nPossible remedies
\n– Establish online connection. Log user out of XENTRY Diagnosis and log in again.
\n– Contact the User Help Desk if the fault occurs again.
\nInformation
\n– For diagnostic access to this model series, a personalized login including authorization is required.
\n– To submit a request, contact the administrator responsible for your service operation (GEMS or authorization administrator).
\nFault number: C003<\/p>\n

\"\"<\/p>\n

Solution:<\/h3>\n

The XENTRY 2025 C003 error typically indicates a missing Zenzefi certificate.<\/p>\n

For diagnosing newer Mercedes models such as W213, W206, W223, W465, and others, a Zenzefi certificate must be imported into the XENTRY software.<\/p>\n

Note: We do not provide Zenzefi certificates.<\/p>\n

If you already have a Zenzefi certificate, import it into XENTRY. If the issue continues after importing the certificate and your software was purchased from us, please contact our customer support for further assistance.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Tried to scan a Mercedes E-Class W213 using MB Star C6, but the diagnosis could not proceed. The system displayed<\/p>\n","protected":false},"author":1,"featured_media":23336,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2038],"tags":[],"views":734,"_links":{"self":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23335"}],"collection":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/comments?post=23335"}],"version-history":[{"count":1,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23335\/revisions"}],"predecessor-version":[{"id":23337,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23335\/revisions\/23337"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media\/23336"}],"wp:attachment":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media?parent=23335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/categories?post=23335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/tags?post=23335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}