P0171 Diagnostic Trouble Code Discussion for October 2019
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2014 Ford F-150 XL 3.7L Hesitation, Cuts out, Stall, spark knock VIN: 1FTMF1CM5E P0171: lean bank 1. Greetings IATN world and thanks! i'll start by saying this truck acts like it has bad gas. only it has acted like this ALL SUMMER LONG. Truck stalls at times, hard starts (have to hold the throttle down and help it chug back to life), spark knock going d... |
October 14, 2019 | |
| 2008 Suzuki SX4 Sport 2.0L Poor Idle Quality, MIL Lamp on VIN: JS2YC41498 P0171: system too lean. ... for a while. The timing chain guide broke and let the chain slip, bending all the valves. We replaced and lapped all of the valves, replaced valve seals, and did a complete timing kit. It MOSTLY seems to run ok except that it's throwing a lean code p0... |
October 24, 2019 | |
| 2009 Lexus LX570 5.7L Misfire VIN: JTJHY00W49 P0171: Lean Bank 1. ... & 7, P0101 MAF, P0171 & P0174 Lean on Bank 1 & 2, P0430 Catalytic Bank 2.) It runs rough ONLY when cold and runs perfect after it warms up. I thought this was a classic bad MAF a... |
October 30, 2019 |
