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I have several codes that came on when tested
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asked
Jan 18, 2017
by
Pamala
this is the list of codes that came up when I had it checked..
U0100, C1446, P040D, P0703, P0488, P0284 and P2291.
Which of these codes is the most important that I should start with first?
Thanks
Vehicle:
2010, Ford F250 Super Duty, 6.4 diesel
light
sensor
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Jan 19, 2017
by
Reynaldo
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U0100 Loss communication with ECM
C1446 Brake switch circuit failure (brake pedal switch)
P040D Exhaust gas recirculation circuit high'
P0703 Brake switch B input circuit
P0488 Exhaust gas recirculation (EGR) Throttle control circuit A range/ performance
P0284 Cylinder 8 contribution balance
P2291 Injector control pressure too low - engne cranking.
The first is check the oil level, P2291 are sometimes seen when the oil level is just too low, as for the brake light switch , you need brake lights, check to see if the brake switch dislodge, ,There cases when the repair is easy what happens is the power input to the brake pedal switch corrodes, simply disconnect and reconnect you may even see corrosion build up on the connection. As for the EGR code a common EGR failure , start with the brake pedal switch, you need brake lights
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