P0171 Diagnostic Trouble Code Discussion for November 2019
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2015 Chevrolet Express 3500 6.0L MIL Lamp on VIN: 1GB3G3CG2F P0171: bank 1 lean. The codes were both in there we are replacing the plugs air filter and cleaned the mass air flow sensor and couldn't fine any vac leaks, has anybody run into a common problem with tese codes before? |
November 05, 2019 | |
| 2002 Pontiac Grand Prix GTP 3.8L MIL Lamp on VIN: 1G2WR12102 P0171: Fuel Trim System Lean (Bank 1). ... code that we cant trace down. The fuel trim (Long Term) remains around 16% at idle or driving while the Short Trim stays around 0. Smoke-tested the engine with no positive results. Replaced the internal PCV valve and o-ring as a precaution, no change.... |
November 18, 2019 | |
| 2017 Volvo XC90 T6 Inscription 2.0L MIL Lamp on VIN: YV4A22PK1H P0171: Lean Bank 1. ... in a month or so ago with a P0171 Lean Bank 1. Smoked the intake, the intercooler had a hole in it. Replaced it, checked fuel trims at idle. TFT at idle, +/- 3% , 1500 rpm, same. Cruising at 65 mph fuel trims were +/- 5%. Shipped it... About 2 weeks... |
November 20, 2019 | |
| 2017 Volvo XC90 T6 Inscription 2.0L MIL Lamp on VIN: YV4A22PK1H P0171: Lean Bank 1. ... in a month or so ago with a P0171 Lean Bank 1. Smoked the intake, the intercooler had a hole in it. Replaced it, checked fuel trims at idle. TFT at idle, +/- 3% , 1500 rpm, same. Cruising at 65 mph fuel trims were +/- 5%. Shipped it... About 2 weeks... |
November 21, 2019 | |
| 2004 Chevrolet Express 3500 6.0L Cuts out, Stall VIN: 1GBHG31UX4 P0171: Fuel Trim System Lean (Bank 1). Hello. this truck came to me for a exhaust leak, misfire, and stalling concern.. the # 7 exhaust valve was burnt from leaking exhaust gases at the cylinder head, had to replace the manfolds and replaced all new valves, sent head to machine shop to have the... |
November 22, 2019 |
