P0171 Code
Thread Starter
Driver School Candidate
Joined: Oct 2007
Posts: 28
Likes: 0
From: arizona
P0171 Code
Check engine light is always on. I scanned and got a P0171 code. cross referenceing this code give me the following defination: Fuel Trim Bank one condition. the code reader then goes on to say probable causes are :
a. if bank one and two codes set together suspect fuel pressure or MAF sensor.
b. oxygen sensor defective
c. ingition misfire-repair
d. fuel injector problem
any idea on where to start? I have notice alot of "ping" when the engine is under alot of load (i.e. going up long hills)
any information would be greatly appreciated
a. if bank one and two codes set together suspect fuel pressure or MAF sensor.
b. oxygen sensor defective
c. ingition misfire-repair
d. fuel injector problem
any idea on where to start? I have notice alot of "ping" when the engine is under alot of load (i.e. going up long hills)
any information would be greatly appreciated
Lexus Champion
Joined: Jan 2005
Posts: 2,447
Likes: 9
From: CA
Clean the MAF, put a bottle of Gumout STP Regane Complete Fuel Injector Cleaner into a full tank of fuel to clean fuel injectors and exhaust valve deposits.
Last edited by TunedRX300; Oct 21, 2007 at 10:42 PM.
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