Question 1

What does P2189 mean?

Accepted Answer

P2189 - System Too Lean at Idle (Bank 2). Engine running lean at idle on bank 2.

Question 2

What are the symptoms of P2189?

Accepted Answer

Check engine light, Rough idle

Question 3

What causes P2189?

Accepted Answer

Small vacuum leak on bank 2, PCV valve leaking, Intake gasket leak, Dirty injectors

Question 4

How much does it cost to fix P2189?

Accepted Answer

Typical repair cost: $50-$500. Lean-at-idle on bank 2 = bank-specific vacuum leak. Check that bank's intake runner gasket.

P2189 — System Too Lean at Idle (Bank 2)

Don't guess — diagnose P2189 the right way