How to Find and Fix Crawl Errors That Are Hurting Your Rankings

Crawl errors are among the most common issues uncovered during a technical SEO audit, and among the most damaging when left unresolved. Every URL that returns an error instead of content is a missed opportunity -- for rankings, for traffic, and for revenue. Our technical SEO services treat crawl error resolution as a first-priority item because the downstream effects compound quickly across a site.

This guide walks through every major type of crawl error, shows you how to find them in Google Search Console, and provides the exact fix for each.

What Are Crawl Errors?

Crawl errors occur when a search engine bot (such as Googlebot) attempts to access a URL on your site and fails. The failure could be at the server level (the server cannot respond) or the URL level (the specific page does not exist or is misconfigured).

Google reports these errors in the Pages report within Search Console (previously called the Index Coverage report). Each error type tells you something different about what went wrong.

Types of Crawl Errors and How to Fix Them

1. 404 Errors (Page Not Found)

What it means: The server responded correctly, but the requested URL does not exist.

Common causes:

• A page was deleted without implementing a redirect.
• A URL was changed without updating internal links.
• External sites link to a URL that was never created or has since been removed.
• A typo in an internal or external link.

How to find them:

• In Search Console, navigate to Pages > Not found (404).
• Use a site crawler like Screaming Frog to crawl your site and flag 404 responses.
• Check Google Analytics for landing pages with zero sessions that previously had traffic.

How to fix them:

1. If the content moved to a new URL: Implement a 301 redirect from the old URL to the new one.
2. If the content was deleted permanently and no equivalent exists: Return a proper 410 (Gone) status code. This tells Google the page was intentionally removed and will not return.
3. If external links point to a misspelled URL: Create a 301 redirect from the misspelled URL to the correct one.
4. Update internal links: Search your site for any internal links that point to the broken URL and update them to the correct destination.

Priority level: High. 404 errors waste crawl budget, break user journeys, and leak link equity from any backlinks pointing to the dead URL.

2. 5xx Server Errors

What it means: The server encountered an internal error and could not fulfill the request. Common variants include 500 (Internal Server Error), 502 (Bad Gateway), and 503 (Service Unavailable).

Common causes:

• Server overload from traffic spikes or resource limits.
• Broken server-side scripts (PHP errors, database connection failures).
• Hosting provider outages.
• Misconfigured .htaccess or server configuration files.
• Plugin or theme conflicts on CMS platforms.

How to find them:

• Search Console Pages report, under "Server error (5xx)."
• Server access logs will show timestamps and URLs that triggered 5xx responses.
• Uptime monitoring tools (Uptime Robot, Pingdom) can alert you to recurring outages.

How to fix them:

1. Check server logs for the specific error message. The fix depends on the cause.
2. For resource limits: Upgrade hosting, enable caching, or implement a CDN.
3. For script errors: Review recent code deployments or plugin updates. Roll back if necessary.
4. For database issues: Check database connection credentials, table corruption, or connection pool limits.
5. For intermittent 503 errors: Investigate rate limiting, bot throttling, or scheduled maintenance windows that may be blocking Googlebot.

Priority level: Critical. Persistent 5xx errors can cause Google to reduce crawl rate and eventually deindex affected pages.

3. Soft 404 Errors

What it means: The server returns a 200 (OK) status code, but Google determines the page has little or no meaningful content -- effectively behaving like a 404 page despite the "success" response.

Common causes:

• Empty or near-empty pages generated by a CMS (blank category pages, tag pages with no posts).
• Search results pages that return "no results found."
• Pages where the main content failed to load due to a JavaScript error.
• Custom 404 pages that do not return a proper 404 status code.

How to find them:

• Search Console Pages report, under "Soft 404."
• Crawl your site and flag pages with very low word counts or missing main content elements.

How to fix them:

1. For truly empty pages: Either add substantive content or return a proper 404/410 status code.
2. For custom 404 pages: Ensure your server configuration returns a 404 HTTP status code, not 200.
3. For JavaScript rendering failures: Fix the underlying JS error so content loads properly. Test with Google's URL Inspection tool.
4. For thin CMS-generated pages: Noindex them or prevent their generation entirely through CMS settings.

Priority level: High. Soft 404s clutter the index with low-quality pages, dilute crawl budget, and can trigger broader quality signals.

4. Redirect Errors

What it means: Googlebot encountered a problem while following a redirect. This includes redirect loops, excessively long redirect chains, and redirects to invalid URLs.

Common causes:

• Redirect loops: URL A redirects to URL B, which redirects back to URL A.
• Long chains: URL A redirects to B, B to C, C to D, and so on. Google will follow up to 10 hops but may stop before resolving.
• Redirects to broken URLs: A 301 redirect points to a URL that itself returns a 404 or 5xx error.
• Conflicting redirect rules: Multiple rules in .htaccess, Nginx config, or CMS plugins that contradict each other.

How to find them:

• Search Console Pages report, under "Redirect error."
• Crawl your site and check for chains longer than one hop or loops.
• Use a redirect checker tool to trace the full chain of any suspect URL.

How to fix them:

1. For loops: Identify which rule creates the circular reference and remove or correct it.
2. For chains: Update each redirect to point directly to the final destination URL.
3. For redirects to broken pages: Update the redirect target to a live, relevant page.
4. Test after fixing: Use curl -I -L (or a browser extension) to verify the redirect resolves in a single hop to a 200 status.

Priority level: High. Redirect errors waste crawl budget, delay page rendering, and leak link equity at each hop in a chain.

5. Blocked by robots.txt

What it means: Googlebot attempted to crawl a URL but was prevented by a Disallow rule in your robots.txt file.

Common causes:

• Overly broad Disallow rules left over from a staging environment.
• Blocking CSS, JavaScript, or image directories that Googlebot needs for rendering.
• Accidentally blocking entire subdirectories that contain important pages.

How to fix them:

1. Review your robots.txt for unintended Disallow rules.
2. Test specific URLs in Search Console's robots.txt Tester.
3. Remove or narrow the blocking rule to allow Googlebot access to important resources.

A Systematic Process for Crawl Error Resolution

Fixing crawl errors ad hoc is unsustainable. Use this process to manage them systematically:

1. Export the full error list from Search Console (Pages report) as a CSV.
2. Categorize by error type (404, 5xx, soft 404, redirect, blocked).
3. Prioritize by impact. Errors on pages with backlinks, high historical traffic, or revenue significance come first.
4. Batch fixes by type. Redirect mapping for 404s, server config changes for 5xx errors, and content updates for soft 404s can often be done in bulk.
5. Validate fixes by requesting reindexing of corrected URLs in Search Console's URL Inspection tool.
6. Monitor weekly. New crawl errors appear as Google recrawls your site. Set a weekly review cadence.

Our site speed optimization engagements frequently uncover crawl errors as a side effect of server performance issues -- the two are closely related.

Preventing Crawl Errors Before They Happen

The best crawl error is the one that never occurs. Build these practices into your workflow:

• Never delete a URL without a redirect plan. Before removing any page, check whether it has backlinks or organic traffic.
• Use pre-launch crawls. Before deploying a site redesign or migration, crawl the staging environment to catch broken links and missing redirects.
• Automate monitoring. Configure Search Console email alerts and third-party uptime monitoring to catch 5xx errors immediately.
• Document redirect mappings. Maintain a spreadsheet of all redirects so future developers can understand the logic and avoid conflicts.
• Test CMS updates in staging. Plugin updates and CMS upgrades are a leading cause of 5xx errors and soft 404s.

Frequently Asked Questions

How long does it take for Google to recognize a crawl error fix?

After implementing a fix, use the URL Inspection tool to request reindexing. Google typically recrawls within a few days to two weeks, depending on your site's crawl frequency. High-authority sites are recrawled faster. The error should clear from Search Console within one to two crawl cycles after the fix is live.

Should I fix 404 errors for pages that never existed on my site?

If external sites link to a URL that was never part of your site (a misspelled URL, for example), you are not obligated to fix it. However, if the linking page has authority, creating a 301 redirect to the most relevant page on your site captures that link equity. It is almost always worth the minimal effort.

Do crawl errors directly lower my rankings?

Individual crawl errors do not trigger a site-wide penalty. However, a large volume of errors signals poor site maintenance, wastes crawl budget (especially on large sites), and means those URLs cannot rank. Pages that linked to broken URLs also lose internal link equity, which can indirectly affect rankings across the site.

What is the difference between a 404 and a 410 status code?

A 404 means "not found" -- the server does not know whether the absence is temporary or permanent. A 410 means "gone" -- the resource was intentionally removed and will not return. Google processes 410s slightly faster, removing them from the index more quickly. Use 410 when you are certain the content will not come back.

Stop Losing Traffic to Broken Pages

Crawl errors are fixable, and every one you resolve is a small win for your site's health and visibility.

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Written by

Cody Schuldt

Published February 2026