What does error code P2187 mean?
lean fuel mixture
The P2187 OBD-II fault code means the vehicle’s on-board computer has detected a lean fuel mixture at an idle in either Bank 1 or Bank 2 (the side of the engine with the corresponding number on the cylinder, if applicable). A lean fuel mixture means there is an excess of air and a shortage of fuel.
What are the p2187-bank 1 system Lean codes?
The two codes P2187- bank 1 system lean, and P2189- bank 1 system lean may lead you down the wrong path of thinking you’ve got a fuel delivery problem. Most DIYers start by changing the fuel filter, checking the fuel pressure, or cleaning the fuel injectors.
Why is my p2189 code leaking into the intake manifold?
Additional codes to pinpoint cause of original P2189 code Air leaking into the intake manifold downstream from the Mass Airflow sensor due to the manifold itself, vacuum hoses off or cracked, leak MAP sensor, Leak at turbo bypass or it’s stuck open, power brake booster hose, or a leak in the EVAP system hoses. Leaks in the exhaust system
Why does my p2187 Hyundai have trouble codes?
But these two P2187 P2189 Hyundai trouble codes can be caused by a faulty EVAP system purge valve. This valve is a common failure point. When the valve sticks open, the intake continues to suck fuel vapors from the charcoal canister. The oxygen sensor sees a rich mixture and commands a leaner mixture to compensate.
How does the p2189 system work at idle?
These sensors signal the amount of free oxygen left in the exhaust after ignition, which determines the fuel ratio. The front sensor is primarily responsible for the mixture, the second sensor behind the exhaust is used for comparison to the front sensor to determine if the converter is working properly.
The two codes P2187- bank 1 system lean, and P2189- bank 1 system lean may lead you down the wrong path of thinking you’ve got a fuel delivery problem. Most DIYers start by changing the fuel filter, checking the fuel pressure, or cleaning the fuel injectors.
Additional codes to pinpoint cause of original P2189 code Air leaking into the intake manifold downstream from the Mass Airflow sensor due to the manifold itself, vacuum hoses off or cracked, leak MAP sensor, Leak at turbo bypass or it’s stuck open, power brake booster hose, or a leak in the EVAP system hoses. Leaks in the exhaust system
But these two P2187 P2189 Hyundai trouble codes can be caused by a faulty EVAP system purge valve. This valve is a common failure point. When the valve sticks open, the intake continues to suck fuel vapors from the charcoal canister. The oxygen sensor sees a rich mixture and commands a leaner mixture to compensate.
These sensors signal the amount of free oxygen left in the exhaust after ignition, which determines the fuel ratio. The front sensor is primarily responsible for the mixture, the second sensor behind the exhaust is used for comparison to the front sensor to determine if the converter is working properly.