P0171 Diagnostic Trouble Code Discussion for August 2015
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 1997 Ford E-150 Econoline 4.6L Hesitation, Surge, Cuts out, Stall VIN: 1FTEE146XV P0171: too lean b1. it came in with a miss on cyl 6 wound the spark plug wire omed open replaced hooked mas and air box up did not wont it run scaner shoed low readings thought a bad maf wrong thought bad comp wrong checked vac back presher fount a post on dpfe it wos low .96 new... |
August 11, 2015 | |
| 2006 Toyota Prius 1.5L Poor Idle Quality, Hesitation, MIL Lamp on VIN: JTDKB20UX6 P0171: Fuel System Too Lean (Bank 1). ... check engine light on. Vehicle was in a few weeks ago, we could not get vehicle to run rough with hours of run time, only code stored was P0304. Recommended customer return when problem is more apparent. Customer returned 1.5 months later with mil on, cust... |
August 11, 2015 | |
| 2005 Ford Expedition XLT 5.4L Poor Idle Quality, Misfire, vacuum in crankcase VIN: 1FMPU16535 P0171: Lean code. Customer driving down highway, heard a pop noise and lost power. Vehicle would not go over 30 mph. Pulled over and towed to shop. Started with misfire, then realilzed that crankcase is in a heavy vacuum. Remove the oil cap and vehicle dies. Remove dipstick and... |
August 12, 2015 | |
| 2006 Chrysler Sebring GTC 2.7L lean VIN: 1C3EL75R66 P0171: Fuel System Lean. this one has me scratching my head. Car came in with lean codes STFT +25 LTFT +33. Map was reading 19 in. at idle. Changed MAP to get correct readings. Changed bank 2 o2 as it was dead. Found intake gaskets leaking and replaced,no other leaks were found. Fuel ... |
August 19, 2015 | |
| 1998 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W1W P0171: Fuel System Lean (Bank 1). ... p0171 and p0174 codes stored,at idle stft is 5-9 ltft is 15-20 at cruise speeds stft goes to 20-25 and ltft drops to 7-9, we have replaced oxygen sensors and mass air flow sensor with dealer parts have checked and could not find any vaccumm leaks there are... |
August 21, 2015 | |
| 2006 Chrysler Sebring GTC 2.7L lean VIN: 1C3EL75R66 P0171: Fuel System Lean. this one has me scratching my head. Car came in with lean codes STFT +25 LTFT +33. Map was reading 19 in. at idle. Changed MAP to get correct readings. Changed bank 2 o2 as it was dead. Found intake gaskets leaking and replaced,no other leaks were found. Fuel ... |
August 21, 2015 | |
| 2006 Volkswagen Passat 2.0T 2.0L MIL Lamp on VIN: WVWAK93C76 P0171: low o2 volts. P0171 was original problem with surging idle. Found excess vacuum in crankcase, replaced noisy crankcase pressure regulator on valve cover. Fuel trims looked great at idle and cruise and idled well. Few days later back with p0171 again. Setting code at idle on... |
August 22, 2015 | |
| 2004 Chevrolet Classic LS 2.2L Excessive Emissions, MIL Lamp on VIN: 1G1ND52F34 P0171: Fuel System Lean. Vehicle is in for check engine light p0171 lean mixture only. No other dtcs have popped up. The car runs completely fine with no issues, no misfires at all, no smoke, no fuel smell. So far i've smoked the intake and found no leaks, performed tuneup (spark plug... |
August 25, 2015 |
