P1997 OBD Code Definition:
Camshaft Position, Exhuast (Bank 1)
P1997 OBD Code Description:

Possible Symptoms

• Malfunction Indicator Light (MIL) active

Possible Causes

• Exhaust Camshaft Adjustment Bank 1 blocked (intermittent)
• Exhaust Camshaft Adjustment Bank 1 faulty

Possible Solutions

• Check Exhaust Camshaft Adjustment Bank 1
• Check Oil Circulation for Dirt/Metal Chips