P0470- Exhaust backpressure circuit malfunction
Open or shorted wiring/sensor.
P0478- Exhaust backpressure too high under normal driving conditions.
Stuck shut or partially shut exhaust backpressure valve or shorted EBP sensor.
P0232- Fuel pump relay driver failed off.
Voltage detected on fuel pump monitor circuit when pump was commanded off.
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes.
SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory!
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