Google Consent Mode v2 signals affect Google advertising features for EEA/UK traffic. This checker reviews observable implementation signals, including defaults, updates, and possible pre-consent firing, then labels what still needs runtime, regional, or legal validation.
What you'll get
Sample output
The checker feeds into the main Measurement Trust audit. Results are evidence-labeled: confirmed when the crawl or uploaded GTM/export data proves it, high risk when signals are incomplete, and not checked when the required evidence was not provided.
Consent Mode v2 sample
Consent Risk: High
Default consent state
Not found before GTM load
High RiskEvidence source: Crawler found GTM container, but no gtag('consent', 'default') or dataLayer consent default before container snippet.
Consent update
Found
ConfirmedEvidence source: CMP interaction pattern and consent update command detected after banner script.
Google consent signals
4 signals detected
ConfirmedEvidence source: analytics_storage, ad_storage, ad_user_data, and ad_personalization appear in consent payload.
Tags firing before consent
Possible pre-consent firing
High RiskEvidence source: GA4 tag snippet appears before visible consent default. Runtime extension evidence was not uploaded.
Region-based behavior
Not checked
Needs More DataEvidence source: No EEA/UK regional test evidence or CMP preview export was supplied.
What is Consent Mode v2?
Basic mode blocks Google tag collection until consent. Advanced mode can send consent-state pings used for modelling, subject to your consent policy and implementation.
Consent Mode v2 adds ad_user_data and ad_personalization. Missing or incorrectly mapped signals can affect Google advertising features; legal compliance is not certified by this tool.
A default state may be missing, an update may be sequenced incorrectly, or tags may lack suitable consent settings. The checker surfaces the observable evidence for review.
CMP compatibility
OneTrust
Detectable implementation signals
Cookiebot / Usercentrics
Detectable script and consent signals
CookieYes
Detectable consent signal patterns
Custom CMP
Observable dataLayer patterns only
Go deeper
The full audit covers GTM container health, GA4 event quality, attribution, user tracking, and page coverage — plus your Consent Mode score.
Run the full audit free →