DTC 188

svtdrop

New Member
Mar 25, 2008
59
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san francisco, CA
i got dtc 188 (system at lean adaptive limit at part throttle, system rich(left)..

this light goes on while im driving, then it goes off, i noticed my car having a idle issue since the light came on..... i have a new TPS and a AIC valve
 
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A systematic lean-issue should generate lean codes on both banks or multiple O2 codes.

I would swap the O2's from one side to the other and then clear the codes. If the code switches to the right side, the O2 has a problem.
 
A systematic lean-issue should generate lean codes on both banks or multiple O2 codes.

I would swap the O2's from one side to the other and then clear the codes. If the code switches to the right side, the O2 has a problem.

i just installed new 02 sensors............. i cleaned the MAF sensor 2 day and i replace IAT sensor .... so far no codes yet, i did drive 70 miles so far....we'll see if it comes back on, i will recheck tomorrow