P1521

Symptoms

• Check Engine light comes on
• Reduced engine power
• Increased engine noise
• Increased oil consumption
• Unstable operation at idle

Causes

• Using oil with the wrong viscosity
• Using oil that does not meet manufacturer specifications
• Low quality motor oil
• Overheating of oil with loss of properties
• Error when changing oil

How to Fix

1. Check the type of oil used according to the owner's manual
2. Change oil and oil filter to proper specifications
3. Reset the error using an OBD-II scanner
4. Check the condition of the engine for possible damage

Related codes

Error P1521 by Vehicle Brand