Manufacturer-Specific Diagnostic Codes List

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.

Learn what Toyota P0A80 means on hybrid vehicles and how to diagnose battery deterioration correctly.

Toyota P3190 commonly points to airflow or throttle issues affecting hybrid startup.