Code P0174
System Too Lean Bank 2
Plain English Meaning:Engine running too lean on second bank
Yellow: Drive with Caution
Lean mix can damage engine long term
P0174 Symptoms
- •Hesitation rough idle poor acceleration
Most Common Causes of P0174
P0174 Repair Playbook
Required Mechanic Tests
A qualified shop should perform these tests before replacing any parts to ensure they aren't guessing:
Check fuel trims smoke test intake
Typical Fix Paths & Estimated Costs
Fix leaks clean MAF $100–$800
Parts for P0174 Repair
Common replacement parts for fuel system codes. (Paid links)
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