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FORDFXR
FORDFXR, Ford Mechanic
Category: Ford
Satisfied Customers: 257
Experience:  FORD MASTER TECHNICIAN ALBERTA JOURNEYMAN INTERPROVICIAL STANDARD
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99 superduty with a 7.3 trouble codes po470 po478 and po ...

Customer Question

99 superduty with a 7.3 trouble codes po470 po478 and po 476 just need explanatin of each and what would triger them
Submitted: 9 years ago.
Category: Ford
Expert:  FORDFXR replied 9 years ago.

hi

P0470Exhaust Back Pressure Sensor Circuit Malfunction

P0476Exhaust Pressure Control Valve Performance

P0478(a)Exhaust Pressure Control Valve High Input

most likely cause would be an 'EBP' sensor out of range, wiring or the line to the sensor could also be the culprit

let me know if you need more info, and let me know what you find.

Louis