P0402
Medium severityExhaust Gas Recirculation Flow Excessive
Quick answer
P0402 (Exhaust Gas Recirculation Flow Excessive) means: The EGR system is flowing more exhaust gas than expected. Plan a workshop visit. Typical Malaysia repair cost: RM200–RM800 (approximate).
Symptoms
- •Rough idle
- •Stalling at idle
- •Check engine light
Likely causes
- •Stuck-open EGR valve
- •Faulty EGR sensor
- •Carbon buildup
Can I drive?
Plan a workshop visit.
Estimated repair cost (Malaysia)
RM200–RM800 (approximate)
This is general information, not a diagnosis. AutoMalaya OBD helps explain your car’s actual scan data; a qualified mechanic may still need to inspect the vehicle.