Engine Error
P0174
System Too Lean (Bank 2)
Severity
Medium
Symptoms
Rough idle, hesitation under load, poor fuel economy
Common Causes
- Vacuum leaks after the MAF
- Dirty Mass Air Flow sensor
- Clogged fuel injectors
- PCV valve leak
How to Fix
- 1 Inspect intake boots
- 2 Clean or replace MAF sensor
- 3 Clean fuel system
- 4 Check PCV hose integrity
Estimated Repair Cost
USD
$75
–
$500
Intake boot: $75 - $150; MAF sensor: $150 - $300