Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0402-00EGR Flow Excessive Detected
P0402EGRC / BPT VALVE
P0402Flow in the Exhaust Gas Recirculation (Excessive)
Manufacturer communications
71Original wording in English
MAZDA
NOTE: This service information only applies to vehicles with PYUKD engine and EGR. DESCRIPTION DTC P0402 EGR malfunctions may be falsely detected due to an internal malfunction of the MAP sensor. REPAIR PROCEDURE 1. Using MDARS, verify DTC P0402 is set in current or past history.
RAM
Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-…
RAM
Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-…
RAM
Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-00 - Mass…
Check vehicle applicability
310A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Alfa Romeo | 4C SPIDER ↗ | 2017 |
| Alfa Romeo | GIULIA ↗ | 2017 |
| Chevrolet | EXPRESS ↗ | 2009 |
| Chevrolet | EXPRESS ↗ | 2008 |
| Chevrolet | EXPRESS ↗ | 2007 |
| Chevrolet | EXPRESS 1500 ↗ | 2007 |
| Chevrolet | EXPRESS 2500 ↗ | 2007 |
| Chevrolet | EXPRESS 3500 ↗ | 2007 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Exhaust Gas Recirculation Flow Excessive Detected
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.