P0663

Symptoms

• Check Engine light comes on
• Slight reduction in power or torque bank 2
• Slight asymmetry in engine operation (rarely felt)
• Slightly reduced efficiency
• The engine generally runs fine

Causes

• Open wire in bank 2 valve solenoid control circuit
• Broken bank 2 valve solenoid winding
• Oxidation or poor contact in the connector
• Blown fuse (if there is a separate one)
• ECU output stage fault for bank 2

How to Fix

1. Measure the resistance of the bank 2 valve solenoid (normal: 10-30 ohms)
2. Check for control voltage at the solenoid while the engine is running.
3. Inspect the wiring and bank 2 solenoid connector
4. Compare with bank 1 valve operation (both should behave the same)
5. If the winding is broken, replace the solenoid
6. If the wiring is broken, restore the wire

Related codes

Error P0663 by Vehicle Brand