Question 1

What does P2188 mean?

Accepted Answer

P2188 - System Too Rich at Idle (Bank 1). Engine running rich specifically at idle on bank 1.

Question 2

What are the symptoms of P2188?

Accepted Answer

Check engine light, Rough idle, Rich exhaust smell at idle

Question 3

What causes P2188?

Accepted Answer

Leaking fuel injector (dripping at idle), Stuck-open EVAP purge valve, Faulty O2 sensor, High fuel pressure

Question 4

How much does it cost to fix P2188?

Accepted Answer

Typical repair cost: $50-$500. A rich-at-idle code often points to a leaking fuel injector — it drips fuel when the injector should be closed.

P2188 — System Too Rich at Idle (Bank 1)

Don't guess — diagnose P2188 the right way