P0478 Citroen Exhaust Pressure Control Valve High

P0478 Citroen 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…

P0478 Chrysler Exhaust Pressure Control Valve High

P0478 Chrysler 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…

P0478 Chevrolet Exhaust Pressure Control Valve High

P0478 Chevrolet 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…

P0478 Cadillac Exhaust Pressure Control Valve High

P0478 Cadillac 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…

P0478 Buick Exhaust Pressure Control Valve High

P0479 Buick Exhaust Pressure Control Valve Intermittent 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…

P0478 BMW Exhaust Pressure Control Valve High

P0478 BMW 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…

P0478 Audi Exhaust Pressure Control Valve High

P0478 Audi 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…

P0478 Acura Exhaust Pressure Control Valve High

P0478 Acura 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…

P0478 Exhaust Pressure Control Valve High

P0478 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…