System Too Lean At Idle P2187
#1
System Too Lean At Idle P2187
I have a 2006 Sonata with about 40,000 miles on it. Recently the check engine light came on, and checking the codes revealed a P2187, System Too Lean At Idle Speed.There were no other codes. I cleaned the MAF sensor. Checked for vacuum leaks as best I could and found none. I also checked the air filter and it is clean. I cleared the code, but the check engine light came back on within a day, revealing the same trouble code.
Does anyone have any suggestions on what else to try? I'm thinking it is probably an oxygen sensor, but which one? I do not have access to an OBDII tool that can do real-time analysis.
Does anyone have any suggestions on what else to try? I'm thinking it is probably an oxygen sensor, but which one? I do not have access to an OBDII tool that can do real-time analysis.
#3
RE: System Too Lean At Idle P2187
I have a 2006 Sonata with about 40,000 miles on it. Recently the check engine light came on, and checking the codes revealed a P2187, System Too Lean At Idle Speed.
#4
RE: System Too Lean At Idle P2187
The engine is the I4. (Sorry about forgetting some obvious information.) I had thought it could be related to ethanol in the gas, in reference to which gas is used. Currently I use 87 octane, and have always used it.
Why not take it to the dealer? In reading over the complex warranty, it was hard to tell under just what area an oxygen sensor would fall (fuel, emissions, engine)? I came to the conclusion that an oxygen sensor was covered under a shorter period of warranty that had already passed, hence my desire to diagnose and repair the problem myself.
Why not take it to the dealer? In reading over the complex warranty, it was hard to tell under just what area an oxygen sensor would fall (fuel, emissions, engine)? I came to the conclusion that an oxygen sensor was covered under a shorter period of warranty that had already passed, hence my desire to diagnose and repair the problem myself.
#5
RE: System Too Lean At Idle P2187
I don't know what you mean by "shorter period of warranty". If you live in the US or Canada, you get 5 years or 60,000 miles if you are NOT the first owner, or 10 years/ 100,000 miles if you are the original owner. Oxygen Sensor clearly falls under the heading of "Powertrain". Take it to the dealer, and just ask them if it's under warranty.
Looks like you're right, it's probably the primary oxygen sensor (the one before the catilytic converter). Be careful cleaning that MAF sensor, they usually don't need cleaning, and it's easy to destroy the element inside.
Looks like you're right, it's probably the primary oxygen sensor (the one before the catilytic converter). Be careful cleaning that MAF sensor, they usually don't need cleaning, and it's easy to destroy the element inside.
Last edited by NovaResource; 09-20-2011 at 01:57 PM.
#6
RE: System Too Lean At Idle P2187
The engine is the I4. (Sorry about forgetting some obvious information.) I had thought it could be related to ethanol in the gas, in reference to which gas is used. Currently I use 87 octane, and have always used it.