C2704 BMW Fault Code

Description:

The issue covered by the bulletin involves a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperature operation.

C2704 Code Symptoms :

When you turn on the ignition, the Service Engine Soon or Check Engine C2704 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the C2704!

Diagnosis And Repairing C2704

C2704 OBD 2 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.

How to fix C2704 code ?

• Continuous oil flow to the VCT piston chamber
• Camshaft advance mechanism binding (VCT unit)
• Erratic camshaft position due to low oil pressure
• Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection