Codes P1411 and P0402

#1
Hi All,

I'm new to the forum, just bought a 2001 Corolla. I have 2 codes that have come up, P1411 and P0402. Any thoughts or suggestions on how to figure out what the issue is?
 
#2
Hi cjb2145,

Just so you know code P1411 represents EGR (exhaust gas recirculation) valve position sensor circuit range/ performance malfunction. Possible causes include:

-EGR Valve Position Sensor
- EGR valve stuck open or closed
- EGR Valve Position Sensor harness is open or shorted
- EGR Valve Position Sensor circuit poor electrical connection

Code P0402 represents EGR flow is excessive. Posible causes include

-EGR volume control valve stuck open
- Faulty EGR volume control valve
- EGR solenoid valve harness is open or shorted
- EGR solenoid valve circuit poor electrical connection
- Faulty EGR temperature sensor and circuit
 
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