How to fix P2187 Code: System too Lean at Idle (Bank 1)
A Lean Condition is when too much air than gas is going into the cylinders
Bank-1 side of the engine has the wrong air/fuel ratio.
A P2187 code can be difficult to troubleshoot since it can be caused by many different things.
If you are getting other codes, they can help point to the issue.

Possible Causes of a P2187 Code:
Bad O2 Sensor
Dirty or bad Mass Air Flow Sensor
Vacuum Leak
Exhaust Leak
Fuel Delivery Problem on Bank-1 (Bad injector, Low fuel pressure, bad sensor)

By using this information, the user assumes all risks of use.

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