What P0402 means
Exhaust Gas Recirculation Flow Excessive Detected
Common causes (general)
Before spending money on parts, verify the code with a scan tool and read freeze frame data. Freeze frame captures every sensor value at the moment the code set — this is often enough to figure out the root cause without further testing.
Manufacturer-specific descriptions
Different manufacturers use this code for slightly different failure modes. Here's what your specific make means by P0402:
| BMW | Exhaust Gas Recirculation Flow Excessive Detected |
| FIAT | EGR Drift positive air control - low air quantity, DC Offset |
| FORD | EGR Flow Excessive Detected |
| MITSUBISHI | Exhaust Gas Recirculation Flow Excessive Detected; EGR flow excessive |
| NISSAN | Exhaust Gas Recirculation Flow Excessive Detected |
| VOLKSWAGEN | Exhaust Gas Recirculation Flow Excessive Detected |
Read this code on your own car
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