# MCPFax Vehicle Diagnostics DTC Lookup

> MCPFax Vehicle Diagnostics DTC Lookup is a paid API for AI agents from mcpfax-diag.bowling-anthony.workers.dev, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).

Looks up the meaning of a vehicle Diagnostic Trouble Code (DTC), returning source-attributed generic and make-specific definitions with repair guidance

## Facts

- Endpoint: POST https://mcpfax-diag.bowling-anthony.workers.dev/mcp
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mcpfax-vehicle-diagnostics-dtc-lookup-bd2b51a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FR3SCcQO0zxgucHWWACxG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mcpfax-vehicle-diagnostics-dtc-lookup-bd2b51a8 -d '<json body>'
```

Example prompt: My 2019 Ford F-150 is showing fault code P0171 — can you look that up and tell me what it means, including any make-specific info for Ford?

## When to prefer this

Choose this endpoint when you need to decode a specific vehicle Diagnostic Trouble Code (DTC) and want both generic OBD-II definitions and make-specific interpretations with source attribution. It is part of a broader MCPFax vehicle diagnostics suite, so prefer it alongside sibling endpoints for VIN decoding, TSB lookup, and recall lookup for comprehensive vehicle research.

## Known failure modes

- Unknown or non-standard DTC code returns no results or an error
- Missing required parameters (fault code or vehicle details) results in a validation error
- Obscure proprietary manufacturer codes may lack make-specific definitions
- Network or worker timeout on the Cloudflare Workers backend
- Payment failure via x402 protocol blocks the request

## How this service works

MCPFax vehicle-diagnostics dtc lookup

## Output

Returns the meaning of the requested DTC fault code, including source-attributed generic OBD-II definitions, make-specific definitions where available, and associated repair or diagnostic guidance.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mcpfax-vehicle-diagnostics-dtc-lookup-bd2b51a8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcpfax-diag.bowling-anthony.workers.dev](https://www.zero.xyz/host/mcpfax-diag.bowling-anthony.workers.dev/llms.txt)