Diagnostic guide · Updated May 2026
Google Ads not working?
7 reasons & fixes
If your Google Ads aren't converting, aren't showing, or are burning budget, the cause is almost always one of seven issues. Each is diagnosable in under five minutes. Walk through them in order — and get the exact fix for each.
The 7 most common reasons Google Ads stop working
Location-of-interest leak
Symptom
Impressions and clicks from countries or regions you did not intend to target.
Fix
Switch campaign geo targeting method from "Presence or interest" to "Presence" only. This forces Google to serve ads only to users physically in your targeted locations, not users who merely mentioned them in a search.
Real example
A US-only SaaS got 53 clicks from India in one hour because location mode was set to Presence-or-Interest. Switching to Presence-only stopped it immediately.
Device mismatch
Symptom
High mobile impression share but near-zero mobile conversions.
Fix
Set mobile and tablet bid modifiers to −100% for desktop-only products (typical B2B SaaS, developer tools, admin consoles). If your product is mobile-first, do the opposite — exclude desktop.
Real example
A desktop-only analytics tool wasting 60% of budget on mobile traffic that bounced. After excluding mobile, CPA dropped 43%.
Search-term bleed
Symptom
CTR ≥ 5%, conversion rate near 0%.
Fix
Check search-term report for last 7 days with clicks > 0. Look for queries like "free", "jobs", "wiki", "tutorial", "download", or competitor brand names. Add them as campaign-level negative keywords.
Real example
An ad-tools SaaS getting clicks on "free ai ad creator" and "ai ad generator reddit" — users looking for freeware, not paid tools.
Broad match without conversion data
Symptom
Broad keywords but Smart Bidding has fewer than 30 conversions in the last 30 days to learn from.
Fix
Switch all keywords to Exact + Phrase pair until you have 30+ monthly conversions. Then selectively add Broad with a tight tCPA or tROAS bid strategy.
Real example
A new campaign launched with Broad match and Maximize Clicks matched queries so broadly that 90% of search terms were unrelated to the product.
Search Partners on by default
Symptom
CPC looks fine but conversion rate is half what you'd expect.
Fix
In Campaign Settings → Networks, uncheck "Include Google search partners". Partner inventory is often auto-surfacing apps and parked domains with low-intent traffic.
Real example
A B2B campaign getting 40% of impressions from Search Partners — zero of them converted. Disabling partners cut irrelevant spend immediately.
Broken conversion tracking
Symptom
Conversions reported in GA4 don't match Google Ads conversions column.
Fix
Check Google Tag Assistant. Verify the conversion tag fires on the thank-you page, not the form submit button. Reconnect Google Ads ↔ GA4 link in Admin if mismatched.
Real example
A SaaS had auto-tagging on but GA4 was blocking the gclid parameter via a misconfigured consent banner — 100% of Google Ads traffic showed as direct.
Landing page / keyword mismatch
Symptom
Quality Score 3–5 across most keywords.
Fix
The landing page headline should contain (or paraphrase) the keyword intent. A "buy X" keyword pointing to a generic homepage will always underperform a "buy X" keyword pointing to a dedicated /buy-x page.
Real example
Campaign targeting "ai ad generator" pointed to the homepage instead of /ai-ad-generator. Quality Score 4. Dedicated LP raised it to 7 and halved CPC.
Free AI audit
Skip the manual checks — run all 7 diagnostics automatically
AdControlCenter connects to your Google Ads via OAuth and runs all seven diagnostics. It flags the specific campaigns with each issue, shows the evidence, and proposes fixes. Nothing applies without your approval. Free plan covers the audit.
Run my free auditNo credit card · OAuth read-only access
Related reading
Tool comparison
Best AI tools for Google Ads in 2026
10 tools compared — AdControlCenter, Optmyzr, Opteo, Madgicx and more.
Background
AI for Google Ads — what it can and can't do
An honest primer on where AI helps with Google Ads and where humans still win.
Product
AI Ads Manager — six networks, one dashboard
Manage Google Ads alongside Meta, Reddit, TikTok, LinkedIn and X.
Concept
AI marketing agents, explained
How autonomous AI agents now run audits, optimizations, and reports in 2026.
Watch the 60-second tour
See it in action.
From your website to live ads on every platform — here is the whole thing in under a minute.
FAQ
Frequently asked questions
Common questions about diagnosing and fixing Google Ads issues.
Why are my Google Ads not getting clicks?+
Four common causes: (1) your impression share is below 20% because bids are too low or Quality Score is low, (2) your ad copy doesn't match the search intent closely enough, (3) your geo targeting is too narrow to have meaningful impressions, or (4) your negative keywords are blocking real matches. Check impression share and search-term report first.
Why are my Google Ads getting clicks but no conversions?+
Three common causes: (1) conversion tracking is broken — clicks land but the conversion event never fires, (2) search-term bleed — clicks come from queries like 'jobs', 'tutorial', or 'free alternative' that don't match your offer, or (3) your landing page takes 6+ seconds to load and visitors bounce before converting. Check your GA4 or Google Tag Assistant first.
Why did my Google Ads CPC suddenly spike?+
Most common cause: your campaign shifted to a new geo or device mix. Check the search-term report by country and device for the spike day. A classic pattern: Presence-or-interest geo mode lets cheap bot-like traffic from low-cost geos in, and Smart Bidding reacts by raising bids on your intended audience. Switch to Presence-only mode.
Why are my Google Ads not showing at all?+
Six possible reasons: (1) the campaign is paused, (2) the daily budget is exhausted, (3) bids are too low to win any auction, (4) the ad is disapproved (check Policy Manager), (5) the keywords have low search volume status, or (6) your conversion tracking misfire is causing Smart Bidding to throttle delivery. The Ad Preview and Diagnosis tool inside Google Ads gives the exact reason per keyword.
Can AI diagnose Google Ads problems automatically?+
Yes. AI can reliably spot the seven issues listed above — presence-or-interest leaks, device mismatch, search-term bleed, bad match types, Search Partners on, broken tracking, and low-quality landing pages — and propose specific fixes. Whether to apply them automatically or require approval is a safety choice. AdControlCenter defaults to human-in-the-loop for budget-affecting changes.
How long should I run a Google Ads campaign before deciding it's not working?+
For conversion-based campaigns, 14 days minimum and ideally 30 conversions. Under that you don't have enough signal to distinguish a bad campaign from an unlucky sample. For click-based campaigns, 3–7 days is usually enough to see the search-term and geo mix.
Why did Google Ads stop working today?+
Most common 'overnight' failures: (1) a policy disapproval that propagated overnight (check Policy Manager), (2) auto-applied recommendations turned on a setting like audience expansion (check Recommendations tab), (3) Smart Bidding hit a learning event from a tracking change, (4) your daily budget exhausted earlier than usual due to a geo or device shift, or (5) the landing page is down (check Status). Walk through these in order.