P2099

Symptoms

• Increased fuel consumption
• Reduced engine power
• Black smoke from the exhaust pipe
• Gasoline smell from exhaust
• Check Engine Light Is On

Causes

• Faulty oxygen sensor (lambda probe) after the catalyst
• Air leaks in front of oxygen sensors
• Problems with fuel injectors (overflow)
• Malfunction of the mass air flow sensor (MAF)
• Worn or dirty catalytic converter

How to Fix

1. Check oxygen sensor readings using a diagnostic scanner
2. Perform a visual inspection of the exhaust system for leaks
3. Check the condition and performance of fuel injectors
4. Clean or replace the mass air flow sensor
5. Check the condition of the catalytic converter

Related codes

Error P2099 by Vehicle Brand