What does it mean when bank 1 is running lean?
The OBDII trouble code P0171 – System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel. Driving a car with the code P0171 can cause more damage to the engine over time, as when the engine runs lean, the combustion temperature is higher.
Can bad gas cause a lean code?
If fuel pressure and volume check out okay, scope the injectors and perform injector drop and/or flow tests to see if they are capable of delivering enough fuel. Dirty/contaminated gas can definitely plug injectors and trigger these lean codes.
Which is Bank 1 on a Toyota Tundra SR5?
Hi Guys….I know this may be a stupid question to some of you veterans here, but what side of the engine is Bank 1 on a 2008 Toyota Tundra SR5 with a 4.7l engine? Bank 1 is driver’s (port) side. Bank 2 is passenger (starboard) side. This is in a US vehicle (left hand driver).
What causes Toyota’s system too lean Bank 1 Code?
Toyota code P0171 – System Too Lean Bank 1 – YouTube Most common cause of this code is vacuum leak in your intake system….sure there are other possible problems too…. Most common cause of this code is vacuum leak in your intake system….sure there are other possible problems too…. Skip navigation Sign in Search Loading… Close
What does p0171 mean on a Toyota V-6?
P0171 Code – Toyota. System Too Lean (Bank 1); Oftentimes, this trouble code is accompanied by an P0174. This is one of the most common trouble codes in V-6 and larger engines. P0171 is a “System Too Lean (Bank 1),” which is triggered by the first exhaust oxygen (02) sensor (aka upstream 02 sensor) on the “Bank 1” side of the engine
Which is the first cylinder in a Toyota Tundra?
Cylinder number 1 is always the forward-most cylinder of the engine or, in the case of transverse engine, the one closest to the accessory drive. Find cylinder 1 and you’ve found Bank 1.