How to fix error code P0078,P0079 for this car
How to fix error code P0078,P0079 for this car? Model:XC70; Maker:Volvo; Year:2004;
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What the P0078 code means
P0078 is a generic OBD2 code indicating that the Engine Control Module (ECM) has tried to control the Bank 1 exhaust valve control solenoid, and found an issue present. This code may be seen in addition to P0079 and P0080.
What repairs can fix the P0078 code?
Repairing or replacing an open or short in wiring
Replacing faulty exhaust valve control solenoid
Replacing the ECM
Correcting any connection issues
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