Manufacturer-Specific Diagnostic Codes List

Learn what Ford P1000 really means, why it is not a failure code, and how to clear it correctly.

Ford P0171 is often caused by vacuum leaks or MAF issues. Learn how to diagnose it correctly.

Learn why Ford P0174 often points to intake leaks and how to diagnose Bank 2 lean conditions.

Ford P1131 usually indicates a lean condition, not a bad oxygen sensor.

Learn how Ford P1151 points to lean operation rather than direct sensor failure.

Ford P2195 often results from lean conditions, not a failed oxygen sensor.

Learn why Ford P2196 usually points to fuel delivery issues rather than sensor failure.

Ford P0401 is often caused by carbon buildup in EGR passages.

Learn why Ford P0316 occurs during startup and how to diagnose it correctly.