P0171 Diagnostic Trouble Code Discussion for November 2023
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 1998 Ford Ranger Splash 4.0L MIL Lamp on VIN: 1FTZR15X2W P0171: too lean bank 1. Hello everyone. I have one that is baffling the shop. It has lean codes for both banks. Since it is a 1998 ford, I looked at BARO HZ on scanner and noted it was indicating an elevation of 7K feet above sea level; 138 HZ. We are in Seattle, so it should be ... |
November 02, 2023 | |
| 2000 Toyota Sienna LE 3.0L Misfire VIN: 4T3ZF13CXY P0171: Fuel System Too Lean (Bank 1). I have another doozy! At least for me it is. This one arrived blowing the EFI fuse. This fused circuit went right to the ECM. If I unplugged the ECM, the fuse would not blow. If I plugged the ECM in the fuse would blow. Put a reman ECM in it and it started... |
November 02, 2023 | |
| 2008 Lexus LS460 4.6L MIL Lamp on VIN: JTHBL46F18 P0171: bi lean. This vehicle has 2 maf sensors-1 for each bank. I am getting a lean code on B1 side only- very high fuel trims. After much diagnosing I am seeing a discrepancy between the 2 maf readings-B1(the troubled side has 1.7gps at idle, B2 has 3.4 gps. I am thinkin... |
November 09, 2023 | |
| 2000 Toyota Sienna LE 3.0L Misfire VIN: 4T3ZF13CXY P0171: Fuel System Too Lean (Bank 1). I have another doozy! At least for me it is. This one arrived blowing the EFI fuse. This fused circuit went right to the ECM. If I unplugged the ECM, the fuse would not blow. If I plugged the ECM in the fuse would blow. Put a reman ECM in it and it started... |
November 20, 2023 |
