P0171 Diagnostic Trouble Code Discussion for September 2015
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2005 Kia Sportage LX 2.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: KNDJF72315 P0171: Fuel System Too Lean (Bank 1). Vehicle came to shop running terrible, obvious misfire, all on bank one. seeing that engine work had recently been accomplished just started back tracking and doing basic testing manually and with scan tool. o2 sensors on bank one dead, no motion, steady at 4... |
September 02, 2015 | |
| 1999 Toyota 4Runner Limited 3.4L No Start, Stall VIN: JT3HN87R7X P0171: Fuel System Too Lean (Bank 1). Customer complaint was that vehicle would stall upon deceleration from highway speed. Vehicle would not start for 5-20 minutes after stall. Test drive replicated this condition on the first try after driving only a couple miles. Vehicle took 10 minutes to rest... |
September 08, 2015 | |
| 2005 Buick Rainier CXL Plus 5.3L MIL Lamp on VIN: 5GAET13M45 P0171: Fuel System Lean (Bank 1). This Buick will very intermittently set these codes, puzzling that it sets rich & lean faults, customer reports no symptoms at all. Last time it was in for oil change it also had a P0101 mass airflow code, cleaned mass airflow sensor during service, had be... |
September 09, 2015 | |
| 2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: 1GNCT18WXY P0171: Fuel System Lean (Bank 1). Hello everyone, We have another 'doozy' and would appreciate your feedback; customer came back in to shop after replacing the oxygen sensor, wires and plugs with a intermittent surge, rough idle complaint. Found the oil pressure sending unit to be leaking oi... |
September 11, 2015 | |
| 1996 Ford F-150 Eddie Bauer 4.9L Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: 1FTEF15YXT P0171: bank 1 lean. Hello all. I just bought this truck after it sat for 15 years. It is in excellent shape, a true time capsule. However, it is having some issues and I do not normally work on too many of these, as I am mostly a Volkswagen-Audi guy. Had to replace both fuel pum... |
September 11, 2015 | |
| 2009 Kia Sedona LX 3.8L Hesitation, Surge VIN: KNDMB23309 P0171: Fuel system too lean Bank 1. This 09 Sedona, most of the time runs fine. But every now and them it will gently surge upon taking off at a stop light. Almost a gentle "oil canning" or rolling hesitation. Had a slew of LEAN codes but for only under an idle situation. Otherwise drive... |
September 15, 2015 | |
| 2002 GMC Sierra 1500 SL 4.3L MIL Lamp on VIN: 2GTEC19W22 P0171: Fuel Trim System Lean (Bank 1). This truck came in with a complaint of hard starting hot and MIL illuminated. P0172 was retrieved. Fuel trims were -27 and -25 long term. After removing the throttle body, fuel could be seen dripping from the fuel pressure regulator. A new regulator was instal... |
September 21, 2015 | |
| 2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: 1GNCT18WXY P0171: Fuel System Lean (Bank 1). Hello everyone, We have another 'doozy' and would appreciate your feedback; customer came back in to shop after replacing the oxygen sensor, wires and plugs with a intermittent surge, rough idle complaint. Found the oil pressure sending unit to be leaking oi... |
September 22, 2015 | |
| 2002 GMC Sierra 1500 SL 4.3L MIL Lamp on VIN: 2GTEC19W22 P0171: Fuel Trim System Lean (Bank 1). This truck came in with a complaint of hard starting hot and MIL illuminated. P0172 was retrieved. Fuel trims were -27 and -25 long term. After removing the throttle body, fuel could be seen dripping from the fuel pressure regulator. A new regulator was instal... |
September 22, 2015 | |
| 2008 Chevrolet Silverado 1500 WT 4.3L Poor Idle Quality, Surge, Misfire VIN: 1GCEC19XX8 P0171: Lean. Hello and thanks. This truck came in barely running. First tech changed 4 o2s and cats. He said o2 were fixed lean. Changed ran a lot better. When cold to warming up has a little intake popping. When this was happening has little misfiring on cyl 2 so did comp... |
September 24, 2015 | |
| 2005 Toyota Corolla CE 1.8L MIL Lamp on VIN: 1NXBR32EX5 P0171: Fuel System Too Lean (Bank 1). ... now, check engine light on with codes P0441 and P0445. Check system for leaks none found, replaced purge valve, OEM fuel cap then drove car for 2000 miles and light came back on same codes P0441 and P0445. Retested and cou... |
September 25, 2015 | |
| 2007 Toyota Camry XLE 2.4L Poor Fuel Economy, MIL Lamp on VIN: 4T1BE46K57 P0171: Fuel System Too Lean (Bank 1). Hello fellow techs. Got a Toyota Camry giving me a fit. Vehicle has a po171-lean bank 1. Customer complains of poor fuel economy and hard start at times. Unable to reproduce hard start. Fuel economy is a little low at 18 mpg average. short term fuel trim start... |
September 25, 2015 |
