P0475 - Exhaust Pressure Control Valve Malfunction
- Faulty Exhaust Back Pressure Valve
- Exhaust Back Pressure Valve harness is open or shorted
- Exhaust Back Pressure Valve circuit poor electrical connection
When is the code detected?
If the ECM detects an Exhaust Back Pressure (EBP), Engine Oil Temperature (EOT) or Intake Air Temperature (IAT) sensor fault it will disable the exhaust back pressure regulator.
- Engine Light ON (or Service Engine Soon Warning Light)
Upon each initial engine start-up, the ECM exercises the exhaust back pressure valve by commanding it to cycle on and off once. If upon start-up the temperature of intake air sensed by the Intake Air Temperature (IAT) sensor is < 37°F (5°C) and the oil temperature sensed by the Engine Oil Temperature (EOT) sensor is between 32°-140°F (0-60°C) it will continue to keep the back pressure valve partially closed. As the oil temperature rises during engine operation, the ECM will control the valve in response to the rising oil temperature.
P0475 Information for specific makes
P0475 FORD Exhaust Pressure Control Valve Malfunction
P0475 MERCEDES-BENZ Exhaust Pressure Control Valve Malfunction
P0475 MINI Exhaust Gas Flap Activation
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