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P0406 – 1998_FORD_F150

Code : P0406
Make : 1998_FORD_F150
Description : P0406 1998 FORD F150 Exhaust Gas Recirculation Sensor ‘A’ Circuit High
Possible causes :
– Faulty EGR volume control solenoid valve
– Carbon built up on EGR valve
– EGR volume control solenoid valve harness is open or shorted
– EGR volume control solenoid valve circuit poor electrical connection
– Faulty EGR temperature sensor and circuit
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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