System running Lean Bank1 engine light code
Thread Starter
Driver School Candidate
Joined: Jan 2015
Posts: 5
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From: AB
System running Lean Bank1 engine light code
Hi Folks - New to this forum, definitely go through the forum and get better understanding before I post going forward. Bear with me for this first post.
Mine is RX300, 1999, 220K miles and Mechanic told me that the engine light that I am seeing is because of the code "System running Lean Bank1 engine light code". It was so co-incidence that I got my appointment and am driving to the shop, seen engine light on and told mechanic. He mentioned that we can proceed with the Timing belt, water pump & transmission flush ( long time planned) , Thermostat because car is not getting warmer enough and they diagnosed and suggested to replace thermostat. He suggested to try the Seafoam Fuel injector and drive for a week if that cleans the sensors, if not, can proceed with further investigation. Also quoted me that if it's O2 sensors they cost around 380$ ( not inclusive of labor). any thoughts on how should I proceed?
Thanks in advance!
Mine is RX300, 1999, 220K miles and Mechanic told me that the engine light that I am seeing is because of the code "System running Lean Bank1 engine light code". It was so co-incidence that I got my appointment and am driving to the shop, seen engine light on and told mechanic. He mentioned that we can proceed with the Timing belt, water pump & transmission flush ( long time planned) , Thermostat because car is not getting warmer enough and they diagnosed and suggested to replace thermostat. He suggested to try the Seafoam Fuel injector and drive for a week if that cleans the sensors, if not, can proceed with further investigation. Also quoted me that if it's O2 sensors they cost around 380$ ( not inclusive of labor). any thoughts on how should I proceed?
Thanks in advance!
Lexus Champion
Joined: Nov 2005
Posts: 2,110
Likes: 77
From: OH
Sounds like you need an Air/Fuel (fancy O2) Sensor, about $100 for an OE Denso (do not use aftermarket). NEVER flush the tranny, only drain and fill. I'm personally not a seafoam fan for anything. How do you know it's not getting warm enough?
Advance Auto will price match Amazon, but you probably have to pay tax.
Advance Auto will price match Amazon, but you probably have to pay tax.
Last edited by carguy07; Jan 8, 2015 at 04:52 PM.
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