Description OBD-II Trouble Code Description for P0478 Alfa Romeo Exhaust Pressure Control Valve High What does this mean? OBD2 Code P0478 Alfa Romeo definition: Exhaust Back Pressure Regulator – Is a variable position valve that controls exhaust back pressure during cold ambient temperatures to increase cab heat and decrease the amount of time needed to…
Tag: P0478
P0478 Acura Exhaust Pressure Control Valve High
Description OBD-II Trouble Code Description for P0478 Acura Exhaust Pressure Control Valve High What does this mean? OBD2 Code P0478 Acura definition: Exhaust Back Pressure Regulator – Is a variable position valve that controls exhaust back pressure during cold ambient temperatures to increase cab heat and decrease the amount of time needed to defrost the…
P0478 JEEP High Voltage On The Engine Brake Driver
Possible causes – Faulty Engine Brake Driver Relay– Engine Brake Driver harness is open or shorted– Engine Brake Driver circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected that the signal from the engine brake driver output does not match the driver feedback signal. Symptoms – Engine…
P0478 FORD Exhaust Pressure Control Valve High
Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to move freely you can then check the…
P0478 DODGE High Voltage On The Engine Brake Driver
Possible causes – Faulty Engine Brake Driver Relay– Engine Brake Driver harness is open or shorted– Engine Brake Driver circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected that the signal from the engine brake driver output does not match the driver feedback signal. Symptoms – Engine…
P0478 CHRYSLER High Voltage On The Engine Brake Driver
Possible causes – Faulty Engine Brake Driver Relay– Engine Brake Driver harness is open or shorted– Engine Brake Driver circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected that the signal from the engine brake driver output does not match the driver feedback signal. Symptoms – Engine…
P0478 BMW Exhaust Gas Flap Activation High
Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)